The following section details changes that can affect programs originally written for the Version 2.0 ACUCOBOL-85 compiler.
Compiler Changes
The "-Ca" compiler flag was still available in Version 2.0, but was not documented. (It was synonymous with the "-Va" flag.) Since Version 2.1, "-Ca" has a new and different meaning. So, you must now use "-Va" to cause opposite video intensities to be used for ACCEPT and DISPLAY statements.