.B extern char **environ;
.PP
.BI "int execl(const char *" pathname ", const char *" arg ", ..."
-.B " /*, (char *) NULL */);"
+.B " /*, (char *) NULL */);"
.BI "int execlp(const char *" file ", const char *" arg ", ..."
-.B " /*, (char *) NULL */);"
+.B " /*, (char *) NULL */);"
.BI "int execle(const char *" pathname ", const char *" arg ", ..."
.BI " /*, (char *) NULL, char *const " envp "[] */);"
.BI "int execv(const char *" pathname ", char *const " argv "[]);"