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Description: Diagnostic artifacts comprise the basis for archaeological interpretations; however, as our taxonomic definitions evolve, artifacts that were previously assigned to a type generally retain that designation, potentially confounding future research efforts and interpretations. For this exercise, the original type assignments are made available in an editable format that fosters engagement with the basic principles of open science, reproducibility, and 21st-Century archaeology. Through the enlistment of Git, GitHub, and an open call to edit and revise current typological assignments and attributes associated with diagnostic artifacts found across the National Forests and Grasslands in Texas (NFGT), the current catalog of projectile points and the most recent contextual data, type assignments, and attributes are made available to a general audience. This approach holds promise for historical and archaeological collections throughout a variety of research domains, and as a snowy/rainy-day option for K-12, higher education, field-based workshops, outdoor outreach and citizen-science projects. All contributions must conform to guidance included in the Guide to Contributing. We encourage users unfamiliar with Git and GitHub to either work through the Git-it challenges to get started in the command line (http://jlord.us/git-it/) or review the content at http://happygitwithr.com/ to get started in R or RStudio. This project was developed in collaboration with archaeologists at the National Forests and Grasslands in Texas. Funding was provided by a grant to Robert Z. Selden, Jr. from the National Forests and Grasslands in Texas (15-PA-11081300-033).