From the ‘707 Captain’ FLIGHT MANUAL Part I – User’s Manual (cs707_manual1.pdf) page 36:

3. CREATE DESCRIPTION.TXT
Do not modify text shown in bold font!
Do not type text shown in grey.

[texture]

model = for the 707-300 and 707-300C can be one of the following below:
· adv
· b
· c
· 300

E-3 must be model=e3
VC-137 must be model=137

ui_variation = Unique variation name. Should include full name and year when the livery was current AND
repaint artists' initials. For example: Lufthansa 1980 JS

[b[description = 707 Captain ([/b]Your description of the livery). Free livery, repaint by Your Name. E-mail
address is recommended. \n (c) 2010 Captain Sim www.captainsim.com

atc_id = XXXXXX (any numbers & characters)

atc_airline = XXXXXX (any numbers & characters)

atc_flight_number = XXXXXX (any numbers & characters)

EXAMPLE OF THE DESCRIPTION.TXT FILE:
[texture]
model = adv
ui_variation=Lufthansa 1980
description=707 Captain (Lufthansa, 1980). Free livery, repaint by John Smith. \n (c) 2010 Captain Sim
www.captainsim.com.
atc_id=1234
atc_airline=1234
atc_flight_number=1234