The article which describes how to use the SD copier to export and compress the Pi OS: https://www.raspberrypi.org/blog/another-update-raspbian/
A post about installing Matchbox Keyboard on the pi, which had warnings in the middle from users who had encountered problems with their desktop icons disappearing (due to Matchbox interfering with the file browser pcmanfm): https://www.raspberrypi.org/forums/viewtopic.php?f=66&t=14719
Another post about the conflict between Matchbox and pcmanfm. At the bottom there is a suggestion that it was somehow fixed in an update, presumably an update to PCMANFM: https://www.raspberrypi.org/forums/viewtopic.php?t=153003
The spec for the touchscreen itself mentions Matchbox, with a quick description of using sudo apt-get install: https://www.element14.com/community/docs/DOC-78156/l/raspberry-pi-7-touchscreen-display
The documentation for Florence itself just shows doing a simple sudo apt-get install: http://florence.sourceforge.net/english/index.html
