cool reader formats

TCR

• https://www.online-convert.com/file-format/tcr

CHM

• https://en.wikipedia.org/wiki/Microsoft_Compiled_HTML_Help

PDB

• https://www.online-convert.com/file-format/pdb

Links

• https://sourceforge.net/projects/crengine/
• https://f-droid.org/packages/org.coolreader/