Notation conventions

Model 204 documentation uses the following standard notation conventions in syntax and examples:

Convention	Description
TABLE	Uppercase represents a keyword that you must enter exactly as shown.
TABLE tablename	In text, italics are used for variables and for emphasis. In examples, italics denote a variable value that you must supply. In this example, you must supply a value for tablename.
READ [SCREEN]	Square brackets ( [ ] ) enclose an optional argument or portion of an argument. In this case, specify READ or READ SCREEN.
UNIQUE | PRIMARY KEY	A vertical bar ( | ) separates alternative options. In this example, specify either UNIQUE or PRIMARY KEY.
TRUST | NOTRUST	Underlining indicates the default. In this example, NOTRUST is the default.
IS {NOT | LIKE}	Braces ( { } ) indicate that one of the enclosed alternatives is required. In this example, you must specify either IS NOT or IS LIKE.
item ...	An ellipsis ( . . . ) indicates that you can repeat the preceding item.
item ,...	An ellipsis preceded by a comma indicates that a comma is required to separate repeated items.
All other symbols	In syntax, all other symbols (such as parentheses) are literal syntactic elements and must appear as shown.
nested-key ::= column_name	A double colon followed by an equal sign indicates an equivalence. In this case, nested-key is equivalent to column_name.
Enter your account: sales11	In examples that include both system-supplied and user-entered text, or system prompts and user commands, boldface indicates what you enter. In this example, the system prompts for an account and the user enters sales11.
File > Save As	A right angle bracket (>) identifies the sequence of actions that you perform to select a command from a pull-down menu. In this example, select the Save As command from the File menu.
EDIT	Partial bolding indicates a usable abbreviation, such as E for EDIT in this example.