SCRIPT, any of a series of text markup languages starting with Script under Control Program-67/Cambridge Monitor System (CP-67/CMS) and Script/370 under Virtual Machine Facility/370 (VM/370); the current version, SCRIPT/VS, is part of IBM's Document Composition Facility (DCF) for IBM z/VM and z/OS systems. SCRIPT was developed for CP-67/CMS by Stuart Madnick at MIT, succeeding CTSS RUNOFF.
Contents
- Native SCRIPT control words
- SCRIPT macros
- Generalized Markup Language
- EasyScript
- GML Starter Set GMLSS
- BookMaster
- Bookmanager
- References
SCRIPT is a procedural markup language. Inline commands called control words, indicated by a period in the first column of a logical line, describe the desired appearance of the formatted text. SCRIPT originally provided a 2PASS option to allow text to refer to variables defined later in the text, but subsequent versions allowed more than two passes.
Native SCRIPT control words
SCRIPT allows space units in control words to be specified in a number of units including inches, centimeters, millimeters, picas, ciceros, m-spaces, or device units (pels at the current device resolution). Vertical space units are assumed to be lines unless otherwise specified.
SCRIPT macros
Script includes a facility for user-defined macros and for automatically reading a profile containing macro definitions and other commands. Several packages for semantic tagging, including GML and EasyScript are built on top of this facility.
Generalized Markup Language
IBM's Generalized Markup Language (GML) Starter Set is a macro language encapsulating a set of SCRIPT commands. GML is a descriptive markup layer describing the logical structure of a document. Both SCRIPT/VS and the GML Starter Set are part of IBM's Document Composition Facility (DCF), used in the System/370 platform and successors. The tag sets of the BookMaster and BookManager BUILD/MVS products are built on a foundation of the GML Starter Set syntax and implementation.
The Standard Generalized Markup Language (SGML) is a descendant of GML. While DCF does not directly handle SGML, there is an SGML translator available as a separate product.
EasyScript
EasyScript is a set of macro definitions and profiles included with Script/370 Version 3 that implements a primitive version of GML. Tags are variables whose values have been set to control words, allowing multiple tags in a single line.
.ez on &P.This is a paragraph. &N1.First item &N2.First subitem &N2.Second subitem &N1.Second itemis roughly equivalent to
This is a paragraph
- First item
- First subitem
- Second subitem
- Second item
GML Starter Set (GMLSS)
The GML Starter Set (GMLSS) is a set of macro definitions and profiles that implements a set of tags that has more of a semantic orientation than the raw Script/VS control words. Tags begin with a colon and end with a period, and may contain attributes between the name and the closing period; a line may contain multiple tags.
BookMaster
Bookmaster is an IBM product, "designed for high-volume in-house publishing applications", that extends the GML Starter Set of DCF. It consists of "a rich set of GML vocabulary for creating complex document layouts." Bookmaster runs under the z/VM and z/OS operating systems.
Bookmanager
Bookmanager is a family of products for producing and reading online books. Bookmanager Build products for generating text are layered on top of SCRIPT and BookMaster and can run on z/VM, z/OS, Windows or OS/2. Bookmanager Read products for viewing text run on a variety of systems. Bookmanager Book Server is a multi-platform system to "serve your electronic books to HTML browsers."