(7) Returns the result of max(/expr/, /expr/).
 
 An expression can have a value of 'n', 'm' or 'y' (or 0, 1, 2
-respectively for calculations). A menu entry becomes visible when it's
+respectively for calculations). A menu entry becomes visible when its
 expression evaluates to 'm' or 'y'.
 
 There are two types of symbols: constant and non-constant symbols.
 
                case KEY_LEFT:
                        switch (button) {
                        case -1:
-                               button = 1;     /* Indicates "Cancel" button is selected */
+                               button = 1;     /* Indicates "Help" button is selected */
                                print_buttons(dialog, height, width, 1);
                                break;
                        case 0:
                                print_buttons(dialog, height, width, 0);
                                break;
                        case 0:
-                               button = 1;     /* Indicates "Cancel" button is selected */
+                               button = 1;     /* Indicates "Help" button is selected */
                                print_buttons(dialog, height, width, 1);
                                break;
                        case 1:
 
                        if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
                            prop->expr->type != E_SYMBOL)
                                prop_warn(prop,
-                                   "default for config symbol '%'"
+                                   "default for config symbol '%s'"
                                    " must be a single symbol", sym->name);
                        break;
                case P_SELECT: