The following section describes the cards needed to produce either a "Setup" or "Source" deck. If the deck has been specified as a "CONT" deck on the "O" card, then some of the parameters dealing with spectral line observations will not be used and must be left blank. If the deck is a "LINE" deck, then the continuum parameters must be left blank. We recommend that neither "LINE" or "CONT" be specified on the "O" card and that you supply all the information on all the cards. "Setup" and "Source" decks differ in whether or not the deck contains one or more 'S' cards. "Setup" decks are used for interactive programs run from the operator's console while source decks are used for less interactive programs. In the following, integer fields, specified by I's, must be right justified. Floating point fields, designated by XXX.XX can be placed anywhere in their fields; the decimal point MUST be supplied but it need not fall in the depicted column. Character fields must be left justified and are designated by A's. 'H', 'M', 'S', and 'D' refer to angular coordinates. The type of card is designated by the character you place in the first column (i.e., 'O', 'R', 'A', 'L', 'P', 'D', 'C', 'S', and ' ' [unlabelled cards). Column 2 must be left blank. (The unlabelled and descriptive origin cards are described fully in the CAO, pp. 41-42 and App. A) You cannot exceed the column limits for any field on any card. Each deck must start with an "O" card and end with an end-of-file ($$ in columns 1-2 of a physical card; do not insert a $$ in a floppy or tape file).