updated for version 7.4.686
Problem: "zr" and "zm" do not take a count.
Solution: Implement the count, restrict the fold level to the maximum
nesting depth. (Marcin Szamotulski)
diff --git a/runtime/doc/fold.txt b/runtime/doc/fold.txt
index 6ae2ff8..20017d3 100644
--- a/runtime/doc/fold.txt
+++ b/runtime/doc/fold.txt
@@ -365,7 +365,7 @@
Also forces recomputing folds, like |zx|.
*zm*
-zm Fold more: Subtract one from 'foldlevel'. If 'foldlevel' was
+zm Fold more: Subtract |v:count1| from 'foldlevel'. If 'foldlevel' was
already zero nothing happens.
'foldenable' will be set.
@@ -374,7 +374,7 @@
'foldenable' will be set.
*zr*
-zr Reduce folding: Add one to 'foldlevel'.
+zr Reduce folding: Add |v:count1| to 'foldlevel'.
*zR*
zR Open all folds. This sets 'foldlevel' to highest fold level.