Enlightenment (comic story)

 was a full-page comic story by Tim Quinn and Dicky Howett included in DWM 105. Unrelated to the TV story of the same name, it instead focused on the inner workings of the Doctor's TARDIS and, in the process, inadvertently foreshadowed a recurring element of the later revived series.

Summary
While the Doctor waits outside, Peri climbs a staircase in the TARDIS lined with portraits of the Doctor's incarnations to change the outer plasmic shell's light bulb, which, it turns out, must actually be done from the inside, through a hatch in the roof.

Characters

 * Sixth Doctor
 * Peri Brown

Continuity

 * Changing the TARDIS light bulb would become a running gag in the Steven Moffat era, as seen in TV: Meanwhile in the TARDIS, Last Night, Pond Life, and The Angels Take Manhattan.
 * The Doctor would be shown to open hatches on the outer police-box-shaped shell of the TARDIS to perform repairs in TV: Spyfall.