DEC Text Processing Utility Data Types

3.3 Integer Data Type

DECTPU also supports binary, octal, and hexadecimal integers. Binary integers are preceded by %b or %B, octal by %o or %O, and hexadecimal by %x or %X. Thus, all the following statements are acceptable:

x := %B10000; x := %o20;

x := %X130; x := 12345;

3.4 Keyword Data Type

Keywords are reserved words in DECTPU that have special meaning to the compiler.

To see a list of all DECTPU keywords, use the SHOW (KEYWORDS) built-in.

You use keywords in the following ways:

•As parameters for DECTPU built-in procedures. For example, the first parameter of the SET built-in procedure is always a keyword (for instance,

PAD, SCROLLING, STATUS_LINE).

•As values returned by DECTPU built-in procedures, such as CURRENT_ DIRECTION, KEY_NAME, LAST_KEY, READ_KEY, and GET_INFO. For example, the call GET_INFO (window, "status_video") has the following keywords as possible return values:

BLINK

BOLD

NONE

REVERSE

SPECIAL_GRAPHICS

UNDERLINE

•As pattern directives. The following keywords fall into this category:

ANCHOR BUFFER_BEGIN BUFFER_END LINE_BEGIN LINE_END PAGE_BREAK

REMAIN

UNANCHOR

These keywords, which behave like built-in procedures, are described in the DEC Text Processing Utility Reference Manual.

•To specify the DECTPU data types (BUFFER, MARKER, LEARN, and so on).

•To report warning or error status conditions (TPU$_BADMARGINS, TPU$_ CREATEFAIL, TPU$_NOEOBSTR, and so on).

•To pass the names of keys to DECTPU procedures.

DEC Text Processing Utility Data Types 3–5

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Compaq AA-PWCBD-TE Keyword Data Type, DEC Text Processing Utility Data Types Integer Data Type, PAD, SCROLLING, Statusline
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AA-PWCBD-TE specifications

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