As they grew in sophistication, dot matrix printers started including several built-in fonts from which the user could select, and some models allowed users to upload their own custom glyphs into the printer. This led to numerous issues where the on-screen layout would not exactly match the printed output, due to differences in the implementation of these features.
The result was significantly better-looking fonts even at low resolution; it had formerly been believed that hand-tuned bitmap fonts were required for this task. PostScript Level 2[ edit ] PostScript Level 2 was introduced inand included several improvements: PostScript 3 was significant in terms of replacing the existing proprietary color electronic prepress systems, then widely used for magazine production, through the introduction of smooth shading operations with up to shades of grey rather than the available in PostScript Level 2as well as DeviceN, a color space that allowed the addition of additional ink colors called spot colors into composite color pages.
Dot matrix printers also introduced the ability to print raster graphics. There were numerous advantages to this approach; not only did it help eliminate the possibility of different output on screen and printer, but it also provided a powerful graphics system for the computer, and allowed the printers to be "dumb" at a time when the cost of the laser engines was falling.
With that said, I do agree with FumbleFingers that the construct likely has no place in E-mail.
Vector graphics printing was left to special-purpose devices, called plotters. Since then, many free Type 1 fonts have been released; for instance, the fonts used with the TeX typesetting system are available in this format.
PostScript went beyond the typical printer control language and was a complete programming language of its own. Retail tools such as Altsys Fontographer acquired by Macromedia in Januaryowned by FontLab since May added the ability to create Type 1 fonts. Typically, PostScript programs are not produced by humans, but by other programs.
DPS added basic functionality to improve performance by changing many string lookups into 32 bit integers, adding support for direct output with every command, and adding functions to allow the GUI to inspect the diagram.
At about this time they were visited by Steve Jobswho urged them to adapt PostScript to be used as the language for driving laser printers. Use as a display system[ edit ] Main articles: However, the cost of implementation was high; computers output raw PS code that would be interpreted by the printer into a raster image at the printer's natural resolution.
In addition, they tended to be expensive and slow, and thus rare. However, it is possible to write computer programs in PostScript just like any other programming language. Although the rule was not written in the original RFCit is generally considered bad form to change the topic of an E-mail thread; topics should be changed by sending a separate E-mail, thus starting a new thread.
In Bob Sproull and William Newman developed the Press format, which was eventually used in the Xerox Star system to drive laser printers.
Concurrently, researchers at Xerox PARC had developed the first laser printer and had recognized the need for a standard means of defining page images. The graphics were interpreted by the computer and sent as a series of dots to the printer using a series of escape sequences.
A free software version, with several other applications, is Ghostscript. Like plotters, laser printers offer high quality line art, and like dot-matrix printers, they are able to generate pages of text and raster graphics.
A postscript is a brief message appended to the end of a letter (following the signature) or other text. A postscript is usually introduced by the letters P.S.
In certain types of business letters (in particular, sales promotion letters), postscripts are commonly used to make a final persuasive. PS stands for postscript. You can add an "after thought" right at the end below a letter.
It is a statement added after the main body of the piece has been written. In the case of academic writing.
How Do You Write a P.S. in a Letter? A P.S.
is always the very last entry in a letter. P.S. stands for postscript, and it is an afterthought related to an idea already mentioned in the letter or something completely separate. May 09, · post·script n. Abbr. PS 1.
A message appended at the end of a letter after the writer's signature. 2. Additional information appended to the manuscript, as of a book or holidaysanantonio.com: Resolved. This, of course, is because “PS” stands for “postscript”. This comes from the Latin “post scriptum” (sometimes written “postscriptum”), which translates to “written after”, or more to the point, “what comes after the writing”.
PS Dictionary entry overview: What does PS mean? • PS (noun) The noun PS has 1 sense. 1. a note appended to a letter after the signature Familiarity information: PS used as a noun is very rare.What ps means when writing a letter