RECYCLEEXCLUDE specifies files to be excluded from the Recycle Bin.
The syntax is:
RecycleExclude=file1[;file2...]
file1, file2, ... : file specifications, may include wildcards
For example, to exclude *.lib, *.obj, and *.bak files:
RecycleExclude=*.lib;*.obj;*.bak
See also: DEL / ERASE command and the Delete to Recycle Bin configuration option.