Up: GTVDEF Language Internal Help
[GTVDEF\]USE [File [/CREATE]]
USE selects a Binary Terminal Definition File (BTDF) to be used in con-
nection with commands DIRECTORY, READ, WRITE, LIST, RENAME and DELETE.
The option /CREATE creates an empty BTDF file. Remember that the GTVDEF
library accesses the BTDF file pointed to by the logical name GAG_TERMI-
USE with no argument lists the name of the current BTDF file.
The GTVDEF utility allows to manipulate a local terminal definition ta-
ble which is volatile (in core memory). The local table can be ini-
tialised with the command DEFAULT or can be read from an external file
using the commands USE and READ. The target terminal name is defined by
the commands NAME1 and NAME2.
The language PARAMS\ is designed to set up or to modify the current ter-
minal parameters in the local table.
Do not forget to issue the command WRITE in order to save the local ta-
ble into some external BTDF file of your choice.
Other commands of language GTVDEF\ allow to maintain BTDF files. Command
LIST is very useful to dump the contents of a BTDF file in a readable
format suitable for later input by the GTVDEF utility.