diff --git a/libprocess/process.h b/libprocess/process.h
index 40d2a32..9f21ffd 100644
--- a/libprocess/process.h
+++ b/libprocess/process.h
@@ -3,12 +3,19 @@
 
 #include <m/system.h>
 
+/* Size of process' stack */
 #define STACK_SIZE (256 * PAGE_SIZE)
 
+/* Process entry function */
 typedef void (*process_func_t) (void);
 
+/* Spawn a new process within the same procgroup with argument */
 int process_spawn (process_func_t func, void* argument_ptr);
+
+/* Quit the current process */
 int process_quit (void);
+
+/* Get process argument pointer */
 void* process_argument (void);
 
 #endif // _LIBPROCESS_PROCESS_PROCESS_H