Log Message:
Import tex-changebar-3.5c as print/tex-changebar.

Identify areas of text to be marked with changebars with the \cbstart
and \cbend commands; the bars may be coloured. The package uses
'drivers' to place the bars; the available drivers can work with
dvitoln03, dvitops, dvips, the emTeX and TeXtures DVI drivers, and VTeX
and PDFTeX.