diff --git a/runtime/doc/terminal.txt b/runtime/doc/terminal.txt
index 5e4ad1f..632431c 100644
--- a/runtime/doc/terminal.txt
+++ b/runtime/doc/terminal.txt
@@ -1376,6 +1376,21 @@
 You can usually shorten `:Evaluate` to `:Ev`.
 
 
+Navigation in the Stack ~
+					*termdebug-variables* *:Frame*
+ `:Frame`	Select the given frame, using  either the frame's
+                stack number, address, or function name.
+ `:Up`	        Select the frame that called the current one with an
+                optional argument to say how many frames to go up.
+ `+`		same (see |termdebug_map_plus| to disable)
+ `:Down`	        Select the frame called by the current one with
+                an optional argument to say how many frames to go down.
+ `-`		same (see |termdebug_map_minus| to disable)
+
+This is similar to using "print" in the gdb window.
+You can usually shorten `:Evaluate` to `:Ev`.
+
+
 Other commands ~
 							*termdebug-commands*
  *:Gdb*	     jump to the gdb window
@@ -1454,6 +1469,14 @@
 If there is no g:termdebug_config you can use: >
 	let g:termdebug_map_K = 0
 <
+						*termdebug_map_minus*
+The - key is normally mapped to :Down. If you do not want this use: >
+	let g:termdebug_config['map_minus'] = 0
+<
+						*termdebug_map_plus*
+The + key is normally mapped to :Up. If you do not want this use: >
+	let g:termdebug_config['map_plus'] = 0
+<
 						*termdebug_disasm_window*
 If you want the Asm window shown by default, set the "disasm_window" flag to
 1.  The "disasm_window_height" entry can be used to set the window height: >