The changecount macro returns a counter maintained by the TiddlyWiki core that tracks the number of modifications made to each tiddler. The changecount macro always applies to the tiddler named in the [[currentTiddler|WidgetVariable: currentTiddler]] variable.
For example:
```
<<changecount>>
```
Displays as:
<<changecount>>
Note how the changecount increases every time this tiddler is modified.