Specifications

6-48
FS '-' n Select/Cancel Kanji Underline Mode
Code 1CH 2DH n
Function Select or cancel underline mode.
Only the low two bits of n is valid.
n = 0: Cancel underline mode.
n = 1: Select 1-dot underline mode.
n = 2: Select 2-dot underline mode.
n = 3: Ignore the command.
The underline is attached to all printing characters, including character right-side spacing.
However, the underline is not attached when skipped by HT or other commands.
This command is not valid for 1-byte characters, however underline setting is valid for 1-byte
characters.
If the underline is canceled by n=0, the subsequent 2-byte characters are not underlined.
The underline mode can also be selected or canceled with FS '!', but the most recently
processed command is effective.
Default n=0 (Cancel underline mode.)