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-rw-r--r--src/group_type.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/src/group_type.h b/src/group_type.h
index 7d09ce3ff..ef93e91d9 100644
--- a/src/group_type.h
+++ b/src/group_type.h
@@ -12,11 +12,11 @@
#ifndef GROUP_TYPE_H
#define GROUP_TYPE_H
-typedef uint16 GroupID;
+typedef uint16 GroupID; ///< Type for all group identifiers.
-static const GroupID ALL_GROUP = 0xFFFD;
-static const GroupID DEFAULT_GROUP = 0xFFFE; ///< ungrouped vehicles are in this group.
-static const GroupID INVALID_GROUP = 0xFFFF;
+static const GroupID ALL_GROUP = 0xFFFD; ///< All vehicles are in this group.
+static const GroupID DEFAULT_GROUP = 0xFFFE; ///< Ungrouped vehicles are in this group.
+static const GroupID INVALID_GROUP = 0xFFFF; ///< Sentinel for invalid groups.
static const uint MAX_LENGTH_GROUP_NAME_CHARS = 32; ///< The maximum length of a group name in characters including '\0'