5 files changed, 14 insertions, 0 deletions
diff --git a/src/error/error.c b/src/error/error.c
index ddbb681..6b15c4c 100644
--- a/src/error/error.c
+++ b/src/error/error.c
@@ -26,6 +26,8 @@
  * 
  * This is a GNU extension.
  * 
+ * @etymology  Report (error)!
+ * 
  * @param  status  The process will exit, with the function returning, with this
  *                 exit status, unless it is zero. If zero, the process shall not exit.
  * @param  errnum  The value of `errno` when the error occurred, zero if the a textual
diff --git a/src/error/error_at_line.c b/src/error/error_at_line.c
index fbfbae3..9e9a79c 100644
--- a/src/error/error_at_line.c
+++ b/src/error/error_at_line.c
@@ -26,6 +26,8 @@
  * 
  * This is a GNU extension.
  * 
+ * @etymology  Report (error at line) in source code!
+ * 
  * @param  status    The process will exit, with the function returning, with this
  *                   exit status, unless it is zero. If zero, the process shall not exit.
  * @param  errnum    The value of `errno` when the error occurred, zero if the a textual
diff --git a/src/error/variables.c b/src/error/variables.c
index 9fd252e..a31c970 100644
--- a/src/error/variables.c
+++ b/src/error/variables.c
@@ -25,6 +25,8 @@
  * This variable is global and shared by all threads.
  * 
  * This is a GNU extension.
+ * 
+ * @etymology  (`error`)-subsystem: (message count).
  */
 volatile unsigned int error_message_count = 0;
 
@@ -44,6 +46,8 @@ volatile unsigned int error_message_count = 0;
  * occurred on the same line as the last time.
  * 
  * This is a GNU extension.
+ * 
+ * @etymology  (`error`)-subsystem: print (one) time (per line).
  */
 volatile int error_one_per_line = 1;
 
@@ -56,6 +60,8 @@ volatile int error_one_per_line = 1;
  * shared by all threads.
  * 
  * This is a GNU extension.
+ * 
+ * @etymology  (`error`)-subsystem function: (print) the (prog)ram's (name).
  */
 void (*volatile error_print_progname)(void) = NULL;
 
diff --git a/src/error/verror.c b/src/error/verror.c
index 70dfb13..a5a4551 100644
--- a/src/error/verror.c
+++ b/src/error/verror.c
@@ -25,6 +25,8 @@
  * 
  * This is a slibc extension to the GNU extension `error`.
  * 
+ * @etymology  (V)ariadic version of (`error`).
+ * 
  * @param  status  The process will exit, with the function returning, with this
  *                 exit status, unless it is zero. If zero, the process shall not exit.
  * @param  errnum  The value of `errno` when the error occurred, zero if the a textual
diff --git a/src/error/verror_at_line.c b/src/error/verror_at_line.c
index 55845b3..dd51f30 100644
--- a/src/error/verror_at_line.c
+++ b/src/error/verror_at_line.c
@@ -31,6 +31,8 @@
  * 
  * This is a slibc extension to the GNU extension `error_at_line`.
  * 
+ * @etymology  (V)ariadic version of (`error_at_line`).
+ * 
  * @param  status    The process will exit, with the function returning, with this
  *                   exit status, unless it is zero. If zero, the process shall not exit.
  * @param  errnum    The value of `errno` when the error occurred, zero if the a textual