Where can I find info about internal tables ? lazarus / 64-FPC development ---------------------------------------------------------------------- Borneq · 2022-03-20 08:14 VMT table is described https://www.freepascal.org/docs- html/prog/progsu166.html and this version Lazarus in /usr/share/fpcsrc/3.2.2/rtl/inc/objpash.inc for Mint. But this table points to many other tables: method definition table,information table etc Where can I find all these tables described? ---------------------------------------------------------------------- PascalDragon · 2022-03-20 11:01 Quote from: Borneq on March 20, 2022, 09:14:10 amBut this table points to many other tables: method definition table,information table etc Where can I find all these tables described? They are not documented as you're not supposed to use them directly, but instead rely on the functionality that provides access to the information provided there (which is either provided by TObject directly or is provided in the TypInfo unit).