diff --git a/source/Ox/js/Constants.js b/source/Ox/js/Constants.js
index 68fcdabd..e95d57b8 100644
--- a/source/Ox/js/Constants.js
+++ b/source/Ox/js/Constants.js
@@ -17,11 +17,11 @@ Ox.EARTH_RADIUS = 6378137;
 Ox.EARTH_CIRCUMFERENCE = 2 * Math.PI * Ox.EARTH_RADIUS;
 //@ Ox.EARTH_SURFACE <n> Surface of the earth in square meters
 Ox.EARTH_SURFACE = 4 * Math.PI * Math.pow(Ox.EARTH_RADIUS, 2);
-//@ Ox.HTML_ENTITIES <object> HTML entities for ... (FIXME)
+//@ Ox.HTML_ENTITIES <o> HTML entities for ... (FIXME)
 Ox.HTML_ENTITIES = {
     '"': '&quot;', '&': '&amp;', "'": '&apos;', '<': '&lt;', '>': '&gt;'
 };
-//@ Ox.KEYS <object> Names for key codes
+//@ Ox.KEYS <o> Names for key codes
 // The dot notation ('0.numpad') allows for namespaced events ('key_0.numpad'),
 // so that binding to 'key_0' will catch both 'key_0' and 'key_0.numpad'.
 Ox.KEYS = {
@@ -83,11 +83,11 @@ Ox.MONTHS = [
     'January', 'February', 'March', 'April', 'May', 'June',
     'July', 'August', 'September', 'October', 'November', 'December'
 ];
-//@ Ox.SHORT_MONTHS <[str]> Short names of months
+//@ Ox.SHORT_MONTHS <[s]> Short names of months
 Ox.SHORT_MONTHS = Ox.MONTHS.map(function(val) {
     return val.slice(0, 3);
 });
-//@ Ox.PATH <str> Path of Ox.js
+//@ Ox.PATH <s> Path of Ox.js
 Ox.PATH = (function() {
     // IE8 can't apply slice to NodeLists, see Ox.slice
     var index, regexp = /Ox\.js(\?\d+|)$/,
@@ -99,6 +99,8 @@ Ox.PATH = (function() {
         }
     }
 }());
+//@ Ox.MODE <s> Mode ('build' or 'dev')
+Ox.MODE = Ox.PATH.slice(0, -1).split('/').pop();
 //@ Ox.PREFIXES <[str]> `['', 'K', 'M', 'G', 'T', 'P']`
 Ox.PREFIXES = ['', 'K', 'M', 'G', 'T', 'P'];
 //@ Ox.SEASONS <[s]> Names of the seasons of the year
@@ -122,7 +124,7 @@ Ox.SYMBOLS = {
     REDO: '\u21BA', UNDO: '\u21BB', PAGEUP: '\u21DE', PAGEDOWN: '\u21DF',
     CAPSLOCK: '\u21EA', TAB: '\u21E5', SHIFT: '\u21E7', INFINITY: '\u221E',
     CONTROL: '\u2303', COMMAND: '\u2318', ENTER: '\u2324', ALT: '\u2325',
-    DELETE: '\u2326', CLEAR:'\u2327',BACKSPACE: '\u232B', OPTION: '\u2387',
+    DELETE: '\u2326', CLEAR:'\u2327', BACKSPACE: '\u232B', OPTION: '\u2387',
     NAVIGATE: '\u2388', ESCAPE: '\u238B', EJECT: '\u23CF',
     SPACE: '\u2423', DIAMOND: '\u25C6',
     STAR: '\u2605', SOUND: '\u266B', TRASH: '\u267A', FLAG: '\u2691',