Variable Initialization (ProPgInitialization needs updates for dialects/UDTs)
External Libraries - availability (windows, linux, DOS), usage, and download locations
Cross compiling and environment variables (used to invoke sub-programs)
Statements (Add to "Lexical Conventions" on CatPgProgrammer)
Scope/Code Blocks (Add to "Statements and Expressions" on CatPgProgrammer)
Expressions (Add to "Statements and Expressions" on CatPgProgrammer)
See Programmer's Guide (W.I.P.)
Need to split Return-from-gosub and Return-from-proc (See KeyPgReturn)
Dedicated page for Screen's QB/page-choosing mode - perhaps KeyPgScreenqb or KeyPgScreenpage...? (quick fb example added to KeyPgPcopy for now...)

None known (but if found, please edit this page)

Warn in all non-portable or "evil" examples
File I/O: FB commands vs "CRT". ProPgFileIO
Consistent policy about "FB version diff" KeyPgImageInfo KeyPgRem
FB source file size limit
"returning references" stuff (PEEK, (), [], ... total 7 pages BUMP'ed today)
"-gen GCC" document how to get it working (esp. in DOS)