v0.2.48..v0.2.49 changeset extent.asciidoc

diff --git a/docs/commands/extent.asciidoc b/docs/commands/extent.asciidoc
index 792d9a2..5b373ba 100644
--- a/docs/commands/extent.asciidoc
+++ b/docs/commands/extent.asciidoc
@@ -5,8 +5,8 @@
 
 The +extent+ command outputs the geospatial bounds of the input map data as an AOI string (minx,maxx,miny,maxy).
 
-* +input+   - an OSM input
-* +verbose+ - if true, outputs a description of the output format (minx,maxx,miny,maxy); defaults to true; optional
+* +input+   - Input; may be any supported input format (e.g. OSM file).
+* +verbose+ - If true, outputs a description of the output format (minx,maxx,miny,maxy); defaults to true; optional
 
 === Usage
 
@@ -19,3 +19,7 @@ extent (input) [verbose]
 --------------------
 Map extent (minx,miny,maxx,maxy): -104.902,38.8532,-104.896,38.855
 --------------------
+
+=== See Also
+
+* https://github.com/ngageoint/hootenanny/blob/master/docs/user/SupportedDataFormats.asciidoc#applying-changes-1[Supported Input Formats]