-/* statusbar
-- battery_perc (battery percentage) [argument: battery name]
-- cpu_perc (cpu usage in percent) [argument: NULL]
-- datetime (date and time) [argument: format]
-- disk_perc (disk usage in percent) [argument: mountpoint]
-- entropy (available entropy) [argument: NULL]
-- ip (ip address) [argument: interface]
-- ram_perc (ram usage in percent) [argument: NULL]
-- temp (temperature in degrees) [argument: temperature file]
-- vol_perc (alsa volume and mute status in percent) [argument: soundcard]
-- wifi_perc (wifi signal in percent) [argument: wifi card interface name] */
+/*
+ * function description argument
+ *
+ * battery_perc battery percentage battery name
+ * battery_power battery power usage battery name
+ * battery_state battery charging state battery name
+ * cpu_perc cpu usage in percent NULL
+ * cpu_iowait cpu iowait in percent NULL
+ * cpu_freq cpu frequency in MHz NULL
+ * datetime date and time format string
+ * disk_free free disk space in GB mountpoint path
+ * disk_perc disk usage in percent mountpoint path
+ * disk_total total disk space in GB mountpoint path
+ * disk_used used disk space in GB mountpoint path
+ * entropy available entropy NULL
+ * gid GID of current user NULL
+ * hostname hostname NULL
+ * ipv4 IPv4 address interface name
+ * ipv6 IPv6 address interface name
+ * kernel_release `uname -r` NULL
+ * keyboard_indicators caps/num lock indicators NULL
+ * load_avg load average format string
+ * num_files number of files in a directory path
+ * ram_free free memory in GB NULL
+ * ram_perc memory usage in percent NULL
+ * ram_total total memory size in GB NULL
+ * ram_used used memory in GB NULL
+ * run_command custom shell command command
+ * swap_free free swap in GB NULL
+ * swap_perc swap usage in percent NULL
+ * swap_total total swap size in GB NULL
+ * swap_used used swap in GB NULL
+ * temp temperature in degree celsius sensor file
+ * uid UID of current user NULL
+ * uptime system uptime NULL
+ * username username of current user NULL
+ * vol_perc OSS/ALSA volume in percent "/dev/mixer"
+ * wifi_perc WiFi signal in percent interface name
+ * wifi_essid WiFi ESSID interface name
+ */