TECO survival guide: the very basics.

doc/TECO.md

@@ -0,0 +1,15 @@
+## TECO survival guide
+
+Note: all commands must be terminated by $$ to execute them.
+
+- ER*file*$@Y - load file
+- EIEE*file*$ - save file
+- ^Z - suspend
+- *n*R - move cursor left
+- *n*C - move cursor right
+- 0L - beginning of line
+- :L - end of line
+- *n*L - beginning of *n*th line from the current position
+- I*text*$ - insert text
+- *n*D - delete *n* characters to the right
+- K - delete to end of line