You can search for identifiers within the package.
in-package search v0.2.0
cdrom
Cdrom
type cdrom_drive_status =
| NO_INFO
| NO_DISC
| TRAY_OPEN
| DRIVE_NOT_READY
| DISC_OK
val string_of_cdrom_drive_status : cdrom_drive_status -> string
type cdrom_disc_status =
| DISC_NO_INFO
| DISC_NO_DISC
| AUDIO
| DATA_1
| DATA_2
| XA_2_1
| XA_2_2
| MIXED
val string_of_cdrom_disc_status : cdrom_disc_status -> string
val query_cdrom_status : string -> cdrom_drive_status * cdrom_disc_status
query_cdrom_status device returns the state of both the drive and any disc currently inside.
query_cdrom_status device
val query_cdrom_drive_status : string -> cdrom_drive_status
query_cdrom_drive_status device returns the state of the drive only.
query_cdrom_drive_status device
val query_cdrom_mcn : string -> string
query_cdrom_mcn device returns the "Universal Product Code" if available.
query_cdrom_mcn device