Remove Structural CDX or Memo flag from a table
The VFP low level file functions (LLFF) can be used to open a table as a file and read/write its header. The Table Header Record Structure is documented in VFP help under Table File Structure.
Check if table is part of DBC
It is easy to find out if a table belongs to the open Database Container (DBC) using INDBC() function. Sometimes it's necessary to check it w/o referring to DBC itself.
VFP implementation of GetZipComment and GetZipFilesList for ZIP acrchives
VFP class below allows retrieval of a ZIP file comment or a list/count of files in the ZIP archive. It uses VFP low level file functions (LLFF) to directly read the ZIP file.