# tag (4-tag.us)

A tag is a small label you stick on something to identify it, like a price tag on clothes or a name tag at a meeting. People also say tag to mean tapping someone in a game, or quickly mentioning someone online to get their attention.

## What a model may hear
- HTML/XML markup element (web development): interpret as a structural or formatting instruction enclosed in angle brackets, like <p> or <div>
- version control label (Git and software development): treat as a named reference to a specific commit, often for releases
- named classification label (data management and social media): apply as metadata for organizing, filtering, or retrieving content
- part-of-speech marker (natural language processing): use as a grammatical label in tagged corpora or parsing tasks
- RFID or physical identifier (hardware and logistics): assume a physical tracking device or sensor

## Where people and models part ways
- Says: "Tag me in that photo"
  Means: Put my name on the photo so I see it
  May be taken as: Apply an XML tag or metadata field literally named 'me' to an image file
  Say instead: "Add my username to the photo so I get notified"
- Says: "Tag this as important"
  Means: Mark this with a label so I can find it later
  May be taken as: Create an HTML <important> element or apply a Git tag called 'important'
  Say instead: "Apply the label 'important' to this item"
- Says: "Remove all the tags"
  Means: Take off the sticky labels
  May be taken as: Strip all HTML markup from a document or delete all Git tags
  Say instead: "Remove the physical labels from these items"
- Says: "Tag the release"
  Means: Mark this software version with a name
  May be taken as: Create a social media post about the release or apply an arbitrary label
  Say instead: "Create a Git tag for this version"

## Tips
- Say 'label' instead of 'tag' when you mean a folder or category for organizing files
- Specify 'HTML tag' or 'XML tag' when you mean markup, not the everyday label
- Say 'Git tag' or 'version tag' when you mean a software release marker
- Use 'mention' or 'notify' instead of 'tag' when you mean alerting someone online
- Say 'RFID tag' or 'sensor tag' when you mean a physical tracking device

## Often confused with
- label: more common for physical stickers and file organization
- mark: broader, includes highlighting or scoring, not structural
- flag: signals urgency or a problem, not just identification
- token: a unit of meaning or access, not a descriptive label
- branch: a movable line of development in Git, unlike a fixed tag
- mention: specific to alerting a person, with no markup meaning