A pane has a tagexec: a word run as a click in its tag

The workspace had /tagexec and a column its exec, but a pane's own tag
could be clicked only by an event record. pane/<n>/tagexec runs each line
as a click in that pane's tag (never redirected to its event reader, as a
header's is not) and reads back what it touched. The README, fs.md and
the skill list it.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 2 insertions, 1 deletions

diff --git a/docs/fs.md b/docs/fs.md
index 5fdde10a..62716cf0 100644
--- a/docs/fs.md
+++ b/docs/fs.md
@@ -129,7 +129,8 @@ Existing Plan9port/v9fs clients need a userspace bridge for QUIC.
              (each pane keeps its tag and 2 rows) refuses it the same way,
              `no space for a pane in that column` (docs/tags.md)
 /pane/<n>/   name body tag ctl addr dot limit data xdata sel dirty mark scroll
-             errors event look exec, plus pty/{ctl,status,data} on terminals
+             errors event look exec tagexec (a word as a click in its tag), plus
+             pty/{ctl,status,data} on terminals
 /os/         the host filesystem
 /src/        the editor's embedded sources, only when built with -Dembed-sources=true
 ```