B08_Attachment_6_Digital_Specs_Guide_Rev2026_Final.pdf

U.S. Department of the Interior Bureau of Land Management

BUREAU OF LAND MANAGEMENT COLORADO

CULTURAL RESOURCES DIGITAL DATA SPECIFICATIONS GUIDE

Supplement and Appendix 9 to

Handbook of Guidelines and Procedures for Inventory, Evaluation, and Mitigation of Cultural

Resources Bureau of Land Management Colorado State Office

Revised January 2026

TABLE OF CONTENTS

GPS AND GIS DATA

GPS Data Collection

GIS Data

Coordinate Systems

Geometry Types and Standards

Attributes

Standardized Site Types

Packaging and Delivery

Site and Survey Numbers Agency Project/OAHP Document and Site Numbers

BLM Project Number

OAHP Project Number

Site Number

OAHP Document/Survey and Site Numbers Request Process

Documentation Report and Site Forms

Maps and Photographs

File Naming Conventions

Document Delivery

LIST OF TABLES

Table 1. BLM Site Attribute Table……………………………………………………………………………………………………………. i Table 2. BLM Survey Attribute Table ............................................................................................................ ii Table 3. Prehistoric Site Types ..................................................................................................................... iii Table 4. Common Historic Site Types and Features .................................................................................... iv Table 5. Resource Type/Temporal Assignment ............................................................................................ v

GPS AND GIS DATA

The Colorado Office of Archaeology and Historic Preservation (OAHP) is an ancillary repository for BLM cultural resource spatial data. Prior to any fieldwork, both BLM and OAHP records must be fully reviewed. Any discrepancies between datasets must be resolved with the field office archaeologist before fieldwork begins

GPS Data Collection

A. All GPS-collected spatial data must meet a horizontal accuracy standard of ±5 meters.

Contractors and permittees are responsible for independently verifying that field GPS equipment is correctly configured and achieving this accuracy prior to data collection. If GPS data collection is not feasible due to terrain, vegetation, satellite availability, or safety concerns (including the presence of hazardous materials), sites and isolated finds shall be documented using manual (non-GPS) methods. In these cases, the appropriate shapefiles or file geodatabase feature classes must be created after returning from the field. All use of non-GPS mapping methods must be clearly documented and justified in both the site form and the associated report.

B. If you are using a GPS device that does not support shapefile or ESRI file geodatabase formats, you must convert your field data into an acceptable format.

C. Do not leave physical datums in the field unless otherwise instructed. Datums may be used during site recording but must be removed once the field work is completed. Virtual datums are preferred and can be based on a permanent or semi-permanent feature on the site, such as a tree or boulder. Virtual datums must relate to the UTMs listed in the Management Data Form, or locational data should be available on the plan map (e.g., UTMs of the datum noted on the map or a UTM grid is included).

D. Site boundaries shall be recorded as polygons and should accurately reflect the observed extent of all surface artifacts and features. A linear site may be recorded as a line in the field, then appropriately buffered and converted to a polygon using GIS. Isolated finds may be created from a single point and converted to a polygon using GIS (the standard buffer is 4 meters).

GIS Data

A. BLM will accept geospatial data only in ESRI shapefile or ESRI file geodatabase formats. ESRI personal geodatabases, .kml/.kmz files, and other raw or non-ESRI formats will not be accepted.

All site and survey boundary data must be submitted as polygon features. Point, line, or polyline features shall not be submitted in place of site or survey boundaries. Some field offices may additionally require submission of artifact- and feature-level point, line, and polygon data; these requirements will be communicated by the BLM archaeologist at the time of project initiation.

Coordinate Systems

A. All cultural resource data submitted to BLM shall be reported in the NAD 1983 datum utilizing UTM coordinates in the appropriate zone (i.e., 12 or 13) and Meridian.

B. The NAD 83 UTM projection is divided into zones. Most of Colorado falls within Zone 13N, while the far western edge of the state lies within Zone 12N. Surveys conducted in Zone 13N must be submitted in the Zone 13N projection. For surveys located in Zone 12N, consult the appropriate BLM field office prior to submission. Some offices no longer accept Zone 12N data and may require reprojection to Zone 13N.

Geometry Types and Standards

A. All site and survey boundary data must be submitted as polygons. Generic shapes (e.g., circles, ovals, rectangles) are not acceptable for delineating site boundaries. Each site must be recorded with multiple vertices that accurately represent the true site boundary. Any mapping errors resulting from positional inaccuracies that cause irregularities in the site boundary must be corrected before submission to the BLM.

B. Linear survey corridors must accurately reflect the width of the inventory (for example, a 100-foot-wide inventory corridor should be buffered 15.7 meters).

C. Isolated finds may be initially recorded as a single point in the field; however, all isolated finds must be submitted to BLM as polygon features. A minimum 4-meter buffer is required. Isolated find polygons may reflect actual observed boundaries and are not required to be circular.

Attributes

A. Site and survey attribute tables shall conform to both the OAHP and BLM attribute table templates; use of both templates is mandatory.

a. For BLM templates, additional fields may be added as necessary; however, no required fields may be removed, and field names provided in the template shall not be modified.

B. Recommended Workflow: The BLM attribute table templates are designed to be completed first and then copied and pasted into the OAHP/SHPO request templates. Following this workflow ensures consistency between BLM records and SHPO submittals and reduces data entry errors

Standardized Site Types

A. Tables 3 and 4 list commonly recorded site and feature types for prehistoric and historic resources. These terms describe physical site and feature expressions and should not be confused with resource type classifications (e.g., Archaeological, Historic Archaeology, Historic, Paleontological, Unknown). Refer to Table 5 for clarification on resource type categories. Use the lexicon provided in Tables 3 and 4 when describing sites and features encountered in the field.

a. Table 3 identifies prehistoric site types. Prehistoric isolated finds may include artifacts and/or features characteristic of these site types (e.g., hearths, lithic scatters, projectile points). Table 4 identifies common historic site and feature types. This list is not exhaustive and does not encompass all historic resources that may be encountered.

B. Use professional judgment when documenting resources not listed, and clearly describe any site or feature types not captured in the tables

Packaging and Delivery

The following outlines best practices for submitting digital data.

A. It is required to utilize the BLM shapefile template for final site and survey data. The BLM will not accept the OAHP survey/site number request templates for final data submissions.

B. Please refer to Tables 1 and 2 below for the required attributes. Upon request the BLM can provide blank templates to use for final submission of site and survey data. There should be two shapefiles (survey and site/IF), or one geodatabase with two feature classes (survey and site/IF) for each project.

a. Do not change or remove fields from either site or survey templates. All fields are required to be filled out.

b. Surveys should be submitted as a single row within the survey shapefile or geodatabase feature class. Where a survey comprises multiple discontinuous inventory areas, the resulting survey file should be submitted as a single, multipart polygon. That is, the individual areas should be dissolved to a single feature (single row) that includes all the individual surveyed areas.

c. Do not submit sites and surveys in the same shapefile or feature class. Site shapefiles may contain multiple features (multiple sites), but the attribute table must clearly differentiate sites by Smithsonian Number.

d. Sites that cross counties should be separated in the shapefile at the county line and numbered accordingly. For example, 5SM.493/5OR.6531 should have a shape for 5SM.493 (San Miguel County only) and one shape for 5OR.6531 (Ouray County only). Do not use both numbers for one shape.

C. Within the shapefile/geodatabase’s applicable attribute field, site and document numbers should always use periods to separate county, agency, and number. Please do not use underscores or leading zeros and do not add any other descriptors such as "IF," or "Site” at the end. For Example:

a. Document Number:

i. MC.LM.R146

b. Site Number:

i. 5MF.435 (Site or IF)

ii. 5MF.435.1 (Linear)

D. Label your shapefile(s)/geodatabase with a project identifier such as a BLM project number or your assigned OAHP document number using underscores to separate county, agency, and numbers with “_sites” or “_survey” at the end to differentiate the two types. For example:

i. MC_LM_R483_Sites

ii. MC_LM_R483_Survey

E. Please use the “Check Geometry” tool and correct any errors using the “Repair Geometry” tool before submission.

F. Compress file geodatabases before submission. Do not place compressed folders inside other compressed folders.

G. Data must be submitted electronically using a secure platform. If it is unfeasible to provide digital data using online file sharing, the BLM will accept encrypted USB flash drives, only.

Site and Survey Numbers

Agency Project/OAHP Document and Site Numbers

BLM Project Number

A BLM project number will be obtained from the field office archaeologist via email. The project number request should occur alongside submission of the field work authorization.

OAHP Project Number

The OAHP number shall be obtained directly from the OAHP office through the online site and survey numbers request submission process outlined below. A project boundary shapefile (typically the survey area) is required for OAHP to issue a project number. The BLM will not request these on behalf of the contractor or otherwise provide this number.

Site Number

Site number(s) shall be obtained directly from the OAHP office through the online site and survey numbers request submission process outlined below. A resource-boundary shapefile is required to issue a Smithsonian number.

OAHP Document/Survey and Site Numbers Request Process

A. As of June 1st, 2025, all site and survey numbers request must be summited to OAHP using the online submission form. Use of the OHHP template is required for all site and survey numbers request.

a. Before proceeding, please note the following conditions:

i. Numbers cannot be returned. Wait to request numbers until your recordings have been vetted or approved by the lead agency of the project, or by the principal investigator responsible for the project.

ii. Have your geospatial data ready to upload. If you have not already, download the latest version of the OAHP GIS templates and review the GIS preparation instructions.

iii. Number requests may take up to 5 business days to process, please plan accordingly. There are no rush services for number requests.

iv. Requestors are responsible for identifying previously recorded resources prior to submitting a request for new numbers.

B. The standalone OAHP template shall be used solely for requesting site and survey numbers.

However, all final spatial data submissions to the BLM must utilize the official BLM template.

C. To request OAHP document/survey and site numbers, obtain OAHP templates, use the online submission form:

https://sites.google.com/state.co.us/oahp-resource-center/forms-guidance/requesting-numbers/number-request-form

D. For further information on this process please refer to the OAHP website:

https://sites.google.com/state.co.us/oahp-resource-center/forms-guidance/requesting-numbers

Documentation1

Report and Site Form

All draft and final cultural resource documentation shall be submitted to the BLM. Submittals are not sent directly to OAHP. Effective January 2026, the BLM no longer accepts paper copies of reports or site documentation; all materials must be submitted digitally.

A. Check with the BLM field office archaeologist before submitting draft documentation; most prefer to review draft deliverables electronically in Microsoft Word format (docx). Ensure the draft versions are not locked or encrypted so that comments and suggested revisions can be added directly to the document.

C. Final PDF versions must be submitted to BLM at the end of the project and should be saved as either PDF/A-1a or PDF/A-1b. The final PDF versions must have the relevant OAHP, and BLM numbers populated where appropriate throughout. PDFs created from scanned hard copies must be processed using optical character recognition (OCR) to make them searchable.

D. The most current OAHP forms can be found at: https://sites.google.com/state.co.us/oahp-resource-center/forms-guidance/inventory-forms?authuser=0. Do not change the format of the OAHP forms. It is preferred that all fields be completed, even if the field is not applicable (use “N/A” or “none”). Fields can be compressed or expanded as needed (e.g., rows in the artifact tables in the historic component form). Use the OAHP form instructions and the NPS National Register Bulletins to aid in completion of the forms. BLM Colorado also has BLM specific, linear site, aboriginal wooden structure, historic well pad, grazing impacts, and travel management forms. These specific BLM forms maybe be required and can be obtained through the FO.

E. The individual components of the site form (Management Data Form, component forms, maps, 1 See the BLM Colorado Handbook (revised 2026), the BLM state Protocol, the OAHP Survey Manual (2007), and any relevant BLM field office or district standards and procedures documents for other reporting requirements.

photographs, and other documentation) must be compiled in a single file, titled by Smithsonian number as detailed below. IFs must include the IF form and map, along with any other relevant documentation, in a single file, titled by Smithsonian number as detailed below.

F. Forms and documents should use a font that works well for OCR. Sans serif fonts are preferred for federal and state digital Accessibility laws.

G. When submitting print copies of deliverables to other agencies (USFS, NPS, etc.), send those materials to the other agencies directly. The BLM will not forward documents on your behalf.

Maps and Photographs

A. Maps related to the site and/or report shall be embedded in the appropriate PDF/A version of the site form and/or report.

B. A map, preferably on a USGS 7.5 topographic basemap at 1:24,000 scale, is required to be embedded in the site/IF form(s) and should be properly displayed to the scale listed on the map.

(e.g., a 1:24,000 scaled map should be free from distortions that alter the accuracy of the scaling). An aerial image can be included but should also be at a scale of 1:24,000. Project location/survey area maps should also follow the above standards.

a. Maps must be appropriately labeled and include at a minimum the following information: Map title/project name, project number, legend, north star, scale, firm name/authors name, date the map produced, and a clear depiction of the land status.

b. Maps depicting the GPS’ed location of sites boundaries can be included in the report but should be attached as an appendix and not directly in the report body.

c. Either a good quality hand drawn site sketch map (digitized only) or GPS/GIS produced site map are acceptable

d. Check with the BLM field office archaeologist for additional map documentation requirements.

C. A digital photograph with a scale included is required for every recorded feature in addition to at least one site overview photo with horizon. Additionally, natural or human caused disturbances or vandalism specifically identified in the site form should be documented through photographs.

D. Digital photographs should be embedded into report and site form(s). Digital copies are not generally required to be submitted to the BLM. However, the BLM may request copies of digital photos for certain projects such as a National Register Nomination. Photographs may be submitted in either JPEG or TIFF formats and numbered using the site or isolate number, a hyphen followed by a sequential number. If photographs are printed, they will need to be printed on acid-free paper.

File Naming Conventions

A. Site and IF naming conventions are based on the Smithsonian trinomial; report naming conventions are based on the OAHP documentation number.

B. Site and IF forms must adhere to the following naming conventions:

5**.****.pdf (for a regular site) 5**.****.1.pdf (for a linear site) where 5** is the county abbreviation (e.g., 5RB) and **** (e.g., 4536) is the site number (and point number, if appropriate for linear resources (e.g., 5RB.8785.1).

C. Reports must adhere to the following naming conventions, based on the OAHP document number:

**.LM.R**** or **.LM.NR**** where the first ** are the two-letter county code (e.g., FN), “R” for results and “NR” for no results, and the last series of **** is an OAHP-assigned consecutive number (e.g., FN.LM.NR1 or FN.LM.R236).

Document Delivery

The following outlines best practices for submitting digital site form and report content.

A. File names shall use periods (“.”) only as separators and not as substitutes for spaces or special characters.

B. PDF is the only accepted format for final reports and site forms.

C. All records must be born digital. Records shall be created and submitted in a digital format (e.g., Adobe Acrobat, Microsoft Word, or other digital form generators) and shall not be printed and re-scanned. Born-digital creation ensures accurate text recognition and long-term usability.

Any record that is not born digital and is submitted as a scanned document must be fully processed with Optical Character Recognition (OCR) by the submitter prior to submission.

D. All data must be submitted electronically using a secure, BLM-approved platform. Generic file-sharing services (e.g., Dropbox, Google Drive) shall not be used, as most BLM offices cannot create accounts or download data from these platforms.

a. If electronic submission via an approved platform is not feasible, BLM will accept encrypted USB flash drives. CDs will no longer be accepted.

i

Table 1. BLM Site Attribute Table

Attribute Type Definition

OBJECTID* Object ID System entered field.

SHAPE* Shape System entered field. Must be a polygon.

SITE_ Text

Smithsonian site number in SHPO format (ex 5ME.4000 or 5GF.342). Do not use leading zeros in site IDs (e.g., 5LR.00462). Do not use zeros or underscores in the place of the period (e.g., 5LR_462). Do not include any other descriptors (e.g., 5LR.462_IF) in the site ID.

SITE_NAME Text Name of resource, if any.

AGENCY_ID Text Project number unique to the BLM agency/office responsible for the data. For site associated with multiple projects separate using “>” (e.g. TR25001 >

TR23023 > TR2004)

SHPO_ID Text Unique SHPO number referring to a specific report document. For sites associated with multiple SHPO IDs separate using “>” (e.g. SM.LM.R385 >

SM.LM.R383 > SM.LM.R234)

RCRD_DATE Date A full date in which the resource was last recorded or updated.

RSRCE_TMPRL Text See Table #3 below. Use Archaeological / Historical Archaeology / Multicomponent / Paleontological / Unknown / Restricted.

SITE_TYPE Text Use standard terminology where possible (See Tables 3 and 4)

NRHP_ELIG Text Resource eligibility for the NRHP.

Use: [ Eligible / Listed / Not Eligible / Needs Data / Supporting / Non-Supporting / Contributing / Non-Contributing ]

ELGBLE_CRTRA Text Which Criterion is the site eligible under?

RSRCE_CNDTN Text Use: Stable / Deteriorating / Destroyed / Unknown / Threatened / Not Applicable

ACRES Double Calculated area of the site in acres (must match site form information)

ELEVATION Long Use the elevation from the OAHP site form.

ZONE Integer This is the UTM zone in which the site is located.

X Long The X coordinate in UTM meters of the center point of the site (can be automatically calculated by GIS but must match info on site form)

Y Long The Y coordinate in UTM meters of the center point of the site (can be automatically calculated by GIS but must match info on site form)

COUNTY COUNTY Enter the county the resource is located in.

LINEAR Long Enter 1 or 0. A “1” denotes that the site is a linear site. A “0”, the default, is used for all non-linear sites.

COMMENTS Text Any additional information not captured elsewhere.

CLCTN_MTHD Text Use: GPS / Digitized / Other

SOURCE Text BLM field office name (Ex. BLM – RGFO]

CREATE_DATE Text Date the record was created

MOD_BNDRY Text SHPO required, project specific field: Has the boundary of an existing resource been modified? Yes or No.

INTSCT_RES Text SHPO required, project specific field. Does the resource intersect with another resource? Yes or No.

SHAPE_LENGTH* Double System entered field.

SHAPE_AREA* Double System entered field.

ii

Table 1. BLM Survey Attribute Table

Attribute Type Definition

OBJECTID* Object ID System entered field.

SHAPE* Shape System entered field. Must be a polygon

AGENCY_ID Text Project number unique to the BLM agency/office responsible for the data. For site associated with multiple projects separate using “>” (e.g. TR25001 >

TR23023 > TR2004)

SHPO_ID Text

Unique SHPO number referring to a specific report document in the appropriate format (e.g. ME.LM.R1000). Do not use zeros or underscores in the place of the period (e.g. ME_LM_R1000). For surveys associated with multiple SHPO IDs separate using “>” (e.g. SM.LM.R385 > SM.LM.R383 > SM.LM.R234)

DOC_TITLE Text Report title

AUTHOR Text Primary report author.

CMPLT_MONTH Date The month and year in which the inventory was completed. Date format is

MM-YYYY.

ACRES Double Acreage of the survey area calculated by the GIS from the spatial features in the data set

SRVY_TYPE Text

Inventory strategy / Type of investigation completed.

Use:[ CLASS II / CLASS III / MONITORING / SITE SPECIFIC STUDY /

ETHNOGRAPHIC STUDY / COLLECTIONS OR NON-FIELD STUDY / OTHER /

PALEONTOLOGICAL / UNKOWN]

NUM_SITES Long The total number of sites recorded during the inventory.

NUM_IFs Long The total number of isolated finds recorded during the inventory.

NUM_ELIG Long The total number of eligible sites recorded during the inventory (a subset of

SITE_COUNT).

ZONE Long UTM Zone the survey is located in. If a survey crosses two zones, digitize it in the zone in which the most land is covered.

X Long The X coordinates UTM meters of the center point of the survey.

Y Long The Y coordinates in UTM meters of the center point of the survey.

COUNTY Text List all the counties that the survey resides in.

COMMENTS Text Any additional information not captured elsewhere.

SOURCE Text BLM field office name (Ex. BLM – RGFO]

CREATE_DATE Text Date the record was created

SHAPE_LENGTH* Double System entered field.

SHAPE_AREA* Double System entered field.

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Table 2. Prehistoric Site Types

Site Type Definition

Lithic Open

Sites contain lithic materials located in an open topographic situation. The material culture at these sites usually consists of chipped stone tools and waste flakes. Architecture is not present on these sites.

Sheltered Same as Open Lithic except the lithic materials are located in rock shelters, overhangs, or alcoves.

Camp Open

Sites are located in an open topographic situation and consist of features or artifacts indicating domestic activity. They are defined by the presence of one or more of the following:

Ground stone tools Ceramics Fire hearths Middens

In addition, waste flakes and chipped stone tools are usually located at these sites. Architecture is not present.

Sheltered Same as Open Architectural but the architectural features are located in rock shelters, overhangs, or alcoves.

Architecture

Open

Sites are located in open topographic situations and contain architectural features. Architectural features include:

Stone enclosures indicating rooms Stone alignments Pithouses

Sheltered Same as Open Architectural but the architectural features are located in rockshelters, overhangs, or alcoves.

Quarry

Stone Location for the extraction of lithic or building material Clay Extraction location for clay deposits used for ceramic production.

Other Any non-stone or non-clay raw material extraction location (including small sand or small gravel for pottery temper material).

Rock Art Sites with petroglyphs and/or pictographs

Kill Site Sites with evidence of intentional slaughter, usually of several large animals.

Game Processing or Butchering Site

Location where carcass elements, typically from large game, are further reduced for consumption or transport. Remains often include bones with butcher marks in association with cutting/chopping tools

Cambium Tree Trees that have been culturally scarred for food procurement by removing the nourishing cambium layer.

Burial Human remains.

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Table 3. Common Historic Site Types and Features

Please refer to the OAHP form 1402m Instructions for the Historic Archaeology Component Form for additional site and feature types.

Site Type/Feature Adit Animal pen Air shaft Artifact scatter (trash scatter, trash dump) Berm Bin (ore, coal) Cairn (purposeful stone marker) Cabin Cannel/Ditch Campfire ring (use hearth) Cattle pen (use animal pen) Cellar (potato, root, cold storage) Chicken coop Cemetery Chute (log, ore) Cinder pile Cistern Debris, construction (brick, stone, lumber) Corral Cribbing Depression Ditch (use canal/ditch) Dump Farm equipment Fence Fire hearth (use hearth) Fire pit (use hearth) Fire ring (use hearth) Fireplace Flume Foundation Game-hanging rack Grave Grave marker Head frame Head gate Hogan Hoist house Homestead (if it represents acquisition from the public domain) Hearth

Hunting blind Inscription (on tree or stone) Lean-to Loading chute Log cabin (use cabin) Marker Mill tailings (use tailings) Mine (define type) Mine shaft Ore Bin Outhouse Outhouse hole Peeled tree Pipeline Pit Pond Portal Privy (use outhouse) Post (upright piece of wood, metal, or concrete) Power line Prospect hole (use prospect pit) Prospect pit Quarry Radio tower (use communication tower) Railroad Ranch Ramada Ramp Reservoir Retaining wall Road (toll, wagon, automobile) Rock alignment Rock art (without writing) Rock pile (not cairn) Root cellar (use cellar Sawmill School Schoolhouse (use school) Shaft house Shed Shop (blacksmith, machine, etc.)

Sign

Slag pile Soil stain (use surface stain) Spring development Stable Still (use distillery) Stock tank Stock driveway Stone circle Stone quarry (use quarry) Storage building (use shed) Surface stain Sweat lodge Tank (leaching, fuel, water, tipple) Tailings Tailings pile (use tailings) Tent platform (use campsite) Tent site (use campsite) Tipi ring (use stone circle) Trail (cattle, foot, interpretive) Tram house Tramway (aerial, cable, funicular) Trash disposal pit (use pit) Trash dump (use artifact scatter or dump) Trash scatter (use artifact scatter) Tree art (without writing) Tree platform Trestle Trench Tunnel (two open ends) Vision quest Wall Waste rock Water tower Water diversion (use dam or head gate) Well (lined hole or pipe) Wickiup Windmill Workshop (use shop) v

Table 4. Resource Type/Temporal Assignment

Resource Type Code Description

Archaeological Prehistoric sites and isolated finds/features.

Historical Archaeology Historic Sites with Incomplete Buildings and Historic Artifacts

Historic Sites with Incomplete Buildings Only

Homesteads, Mining Sites, Oil Well Sites, Seasonal Dwellings, Isolated Complete and Incomplete Buildings

Historic Artifacts Only

Historical IF

Historic Historic built environment sites. Mainly intact historic buildings. If a historic site needs additional protection, please use historical archaeology as your resource type instead.

Multicomponent (Archaeological/Historic Archaeology)

Use Multicomponent when archaeological and historical archaeology are both present.

Paleontological Paleontological sites – not landforms.

Unknown If it is unknown whether the site is historic or prehistoric. This will be given the highest level of protection because of its unknown status.

Restricted Site containing burials, Tribal Cultural Property, or other sensitive features that should not be disseminated at the request of a landowner and/or tribe.