LEGENDON

Syntax: | `SET LEGENDON n GET LEGENDON { n }`
Default value: | `LEGENDON = 0`

`LEGENDON` controls whether or not a short line segment, with plotting symbols, is drawn along with a character string, when the `GRAPH` command is entered. The line segment is drawn with the same line type and plotting symbols as the data curve. If `LEGENDON` is on, a character string is expected as the first parameter of the `GRAPH` command.

`LEGENDON = 0` → legend is off
`LEGENDON ≠ 0` → legend is on

LEGENDENTRYLINEON