https://softwarepreservation.computerhistory.org/modula3/archive/DEC_SRC/release-3.6-html/m3sources/html/anim3D/src/PropList.i3.html
SRC Modula-3: anim3D/src/PropList.i3
srcmodula
https://svn.haxx.se/dev/archive-2005-07/1044.shtml
Subversion Dev: Re: [PATCH] add --xml to proplist command
subversion devadd xmlpatchcommand