The Microsoft Browse Information Compactor (SBRPACK) removes unreferenced symbols from .SBR files before they are processed by BSCMAKE. This can result in smaller .SBR files, which allow BSCMAKE to run faster. Smaller .SBR files also save space on disk.
Packing .SBR files is optional. The Microsoft C Compiler version 7.0 (CL) automatically calls SBRPACK when you specify either /FR or /Fr to create an .SBR file. If you specify /FRn or /Frn, CL does not call SBRPACK to pack the .SBR file. Other compilers and assemblers do not pack .SBR files. You may want to use SBRPACK to pack an .SBR file that was created without packing.
SBRPACK.EXE runs under real-mode DOS. It does not use virtual memory, expanded memory, or extended memory.