config.h: document everything

config.h

@@ -3,7 +3,7 @@
  **********************/
 
 /***************
- * LOOK & FEEL *
+ * LOOK & FEEL * [All of these are required options]
  **************/
  
 /* Border colors */
@@ -54,8 +54,9 @@
     0                                       \
   }
 
-/* Names for the virtual desktops. You can define all 12, or only
- * as many as you use.
+/* Names for the virtual desktops. Even if you don't use all of them,
+ * it's safer to keep dummy or null values for all of them in case you
+ * start the program with a different number of virtuals by happenstance.
  * Remember the backslash at the end of non-terminating lines!
  */
 
@@ -78,14 +79,14 @@
 // clang-format on
   
 /************
- * BEHAVIOR *
+ * BEHAVIOR * [Everything in this section is optional unless otherwise noted]
  ***********/
 
 /* This sets the size ratio for windows spawned via keyboard or
  * center-snapped; CENTERNUM should be >= 2, so use 2/4 instead of 1/2
  */
-#define CENTERNUM 2
-#define CENTERDEN 3
+#define CENTERNUM 2 // required unless you also comment/omit SNAPCENTER_KEY
+#define CENTERDEN 3 // required unless you also comment/omit SNAPCENTER_KEY
 
 /* Centered windows should maximize vertically by default?
  * This is the behavior of new windows spawned with the launch shortcut
@@ -115,20 +116,25 @@
  * Remember the backslash at the end of non-terminating lines!
  */
 
-/* You can remove/comment the entire macro to improve performance if you
- * don't use this feature!
- */
-
 #define AUTOSTICK {\
    "XOsview",      \
    "XClock",       \
     0              \
 }
 
+/* List of window classes to REQUIRE window sweeping when spawning;
+ * Remember the backslash at the end of non-terminating lines!
+ */
+
+#define ALWAYSDRAW {\
+  "cmapcube", \
+  0                 \
+}
+
 // clang-format on
 
 /***************
- * KEYBINDINGS *
+ * KEYBINDINGS * [Any shortcut key can be omitted]
  **************/
 
 /* Modifier key and associated modifier bits;
@@ -146,9 +152,6 @@
 #define MODBITS (1 << 6)
 
 /* Shortcut keys */
-/* Any of these can be commented out/omitted if you want to free up
- * your keyboard shortcuts for other things. Alt-tab is always bound.
- */
  
 #define MAX_KEY XK_m
 #define ICON_KEY XK_i