DECTCEM Text Cursor Enable Mode

CSI ? 25 h shows the cursor and CSI ? 25 l hides it. Shown is the default.

Only the cursor’s symbol on the screen is affected. A hidden cursor still has its position, still moves, and text is still written where it is. DEC STD 070 asks that turning it off be immediate, and suggests that a terminal’s setup screen offer a way to turn it back on, in case a program forgets to.

On this site the cursor’s cell is outlined in the drawn terminal only while it is visible; the cursor-visible line in a case checks the mode itself.

Validation

DECTCEM-1: Hidden where it is

\e[2;3H
\e[?25l

|_____|
|_____|
cursor 2,3
cursor-visible no

DECTCEM-2: Text is still written

\e[?25l
AB

|AB___|
cursor 1,3
cursor-visible no

DECTCEM-3: Shown again

\e[?25l
\e[?25h

|_____|
cursor-visible yes

DECTCEM-4: Shown to begin with

\e[?25$p  # DECRQM: is mode 25 set?

|_____|
cursor-visible yes
reply \e[?25;1$y