The AMREVLINE command uses revision block files to insert revision blocks into a drawing.
Revision blocks are in a folder named Revisionlist. The path to the folder containing the Revisionlist folder is in the system editor key Acad/M
PathsDwgTitle (Configuration file settings gef@Paths@DwgTitle).
By default, the key points to C:\Users\Public\Public Documents\Autodesk\AutoCAD Mechanical 2025\Acadm\Gen\Dwg\RevisionList