To customize character set conversion

Note: When creating a customized character set conversion, the resulting program will not be thread safe. This will cause problems in the Communications Process (MFCS), resulting in memory corruption.

To prevent this, insert a Local-Storage Section declaration immediately after the Working-Storage Section in the $COBDIR\src\codeset\csnnnn.cbl file, where nnnn is the 4-digit country code.

Start a Visual COBOL command prompt. If you need instructions, see To start Visual COBOL command prompt.
Create a new folder to hold temporary files and make it the current folder. For example:
UNIX:
```
mkdir mylang
cd mylang
```
At the command prompt, enter:
UNIX:
```
export MFCODESET=nnnn
```
where nnnn is the supported 4-digit country code whose character set conversion tables are most similar to the customized versions you want to create.
Enter:
```
codecomp /p mapfile.a2e mapfile.e2a
```
The files mapfile.a2e and mapfile.e2a are created in the current folder.
Edit the conversion tables in the mapfiles to suit your requirements. mapfile.a2e contains the ANSI to EBCDIC conversion table; mapfile.e2a contains the corresponding EBCDIC to ANSI conversion table.
Enter:
```
codecomp mapfile.a2e mapfile.e2a
```
A file codeset.cpy is created in the current folder.
Enter:
UNIX:
```
cp $COBDIR/src/codeset/csnnnn.cbl csnnnn.cbl
```
where $COBDIR is your installation directory and nnnn is a number between 2000 through 9999 (excluding 9122) that you use to refer to your customized codeset module.
Enter:
UNIX:
```
cob -u csnnnn.cbl
```
Enter:
UNIX:
```
cp csnnnn.gnt $COBDIR/bin
```
where $COBDIR is your installation directory and nnnn is the customized codeset number.