commit - b379cdd53a20a5f58177964c5a38cb456b70fc54
commit + 50439ce092f7a29a333e8be9caa4ad530ce4da5e
blob - 8c3b61046704c1f0316aaba2c22d18d85badd340
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--- index.md
+++ index.md
@@ -34,6 +34,15 @@ Tested with [nvi](https://en.wikipedia.org/wiki/Nvi) 1
 </pre>
 
 
+## Increment / Decrement number in command mode
+
+(1) move cursor to number<br>
+(2a) increment by one: #+<br>
+(2b) increment by N (5): 5#+<br>
+(3a) decrement by one: #-<br>
+(3b) decrement by N (9): 9#-
+
+
 ## Add &#35; to a block
 
 <pre>
@@ -46,7 +55,7 @@ Tested with [nvi](https://en.wikipedia.org/wiki/Nvi) 1
 	:'k,'ls/\ *$//
 
 
-## Remove the first N characters from every line
+## Remove the first N-characters from every line
 
 N = 5