diff --git a/.cheat/nmap b/.cheat/nmap
new file mode 100644
index 0000000..61c58c6
--- /dev/null
+++ b/.cheat/nmap
@@ -0,0 +1,33 @@
+Single target scan:
+nmap [target]
+
+Scan from a list of targets:
+nmap -iL [list.txt]
+
+iPv6:
+nmap -6 [target]
+
+OS detection:
+nmap -O [target]
+
+Save output to text file:
+nmap -oN [output.txt] [target]
+
+Save output to xml file:
+nmap -oX [output.xml] [target]
+
+Scan a specific port:
+nmap -source-port [port] [target]
+
+Do an aggressive scan:
+nmap -A [target]
+
+Traceroute:
+nmap -traceroute [target]
+
+Ping scan only: -sP
+Don't ping:     -PN
+TCP SYN ping:   -PS
+TCP ACK ping:   -PA
+UDP ping:       -PU
+ARP ping:       -PR
diff --git a/README.md b/README.md
index 3a260d6..3817050 100644
--- a/README.md
+++ b/README.md
@@ -83,10 +83,40 @@ After you've customized your cheatsheets, I urge you to track `~/.cheat/` along
 with your [dotfiles][].
 
 
+Setting a CHEATPATH
+----------------------
+By default, all cheatsheets are installed to `~/.cheat/`, but you can instruct
+`cheat` to look for cheatsheets in other directories by exporting a `CHEATPATH`
+environment variable:
+
+```bash
+export CHEATPATH=/path/to/my/cheats
+```
+
+You may, of course, append multiple directories to your `CHEATPATH`:
+
+```bash
+export CHEATPATH=$CHEATPATH:/path/to/more/cheats
+```
+
+
 Contributing
 ============
-If you would like to contribute additional cheatsheets for basic \*nix
-commands, please modify the `.cheat` file and send me a pull request.
+If you would like to contribute cheetsheets or program functionality, please
+fork this repository, make your chanages, and send me a pull request.
 
+Related Projects
+================
 
-[dotfiles]: http://dotfiles.github.io/
+- [lucaswerkmeister/cheats][1]: An implementation of this concept in pure bash
+  that also allows not only for numerical indexing of subcomands but also
+  supports running commands interactively.
+
+- [jahendrie/cheat][2]: A bash-only implmentation that additionally allows for
+  cheatsheets to be created and `grep` searched from the command-line.
+  ([jahendrie][] contributed key ideas to this project as well.)
+
+[dotfiles]:  http://dotfiles.github.io/
+[jahendrie]: https://github.com/jahendrie
+[1]:         https://github.com/lucaswerkmeister/cheats   
+[2]:         https://github.com/jahendrie/cheat
diff --git a/cheat b/cheat
index d1968a8..b4a3249 100755
--- a/cheat
+++ b/cheat
@@ -18,27 +18,42 @@ user_cheat_dir = os.path.join(os.path.expanduser('~'), '.cheat')
 if os.path.isdir(user_cheat_dir):
     cheatsheets += [(f, user_cheat_dir) for f in os.listdir(user_cheat_dir)
                     if '.' not in f]
+
+# add the cheat files from the directory specified in $CHEATPATH
+if 'CHEATPATH' in os.environ and os.environ['CHEATPATH']:
+    path = os.environ['CHEATPATH'].split(os.pathsep)
+    if os.path.isdir(path):
+        cheatsheets += [(f, path) for f in os.listdir(path) if '.' not in f]
 cheatsheets.sort()
 
+# assemble a keyphrase out of all params passed to the script
+keyphrase  = ' '.join(sys.argv[1:])
+
+# verify that we have at least one cheat directory
+if not cheatsheets:
+    print >> sys.stderr, 'The ~/.cheat directory does not exist or the CHEATPATH variable is not set.'
+    exit()
+
 # assemble a keyphrase out of all params passed to the script
 keyphrase = ' '.join(sys.argv[1:])
 
 # print help if requested
-if keyphrase in ['', 'help', '--help', '-h']:
+if keyphrase.lower() in ['', 'cheat', 'help', '-h', '-help', '--help']:
     print "Usage: cheat [keyphrase]\n"
     print "Available keyphrases:"
-    print "\n".join([name[0] for name in cheatsheets])
+    max_command = max([len(sheet[0]) for sheet in cheatsheets]) + 3
+    print '\n'.join(sorted([ '%s [%s]' % (sheet[0].ljust(max_command), sheet[1]) for sheet in cheatsheets]))
     exit()
 
 sheet_found = False
 # print the cheatsheet if it exists
 for sheet in cheatsheets:
     if keyphrase == sheet[0]:
-    cheatsheet_filename = os.path.join(sheet[1], keyphrase)
-    with open(cheatsheet_filename, 'r') as cheatsheet:
-        print cheatsheet.read()
-        sheet_found = True
+        cheatsheet_filename = os.path.join(sheet[1], keyphrase)
+        with open(cheatsheet_filename, 'r') as cheatsheet:
+            print cheatsheet.read()
+            sheet_found = True
 
 # if it does not, say so
-if not sheet_found:
-    print 'No cheatsheet found.'
+else:
+    print 'No cheatsheet found for %s.' % keyphrase