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  2. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    In the table below, the column "ISO 8859-1" shows how the file signature appears when interpreted as text in the common ISO 8859-1 encoding, with unprintable characters represented as the control code abbreviation or symbol, or codepage 1252 character where available, or a box otherwise. In some cases the space character is shown as ␠.

  3. List of XML and HTML character entity references - Wikipedia

    en.wikipedia.org/wiki/List_of_XML_and_HTML...

    However the XML and HTML standards restrict the usable code points to a set of valid values, which is a subset of UCS/Unicode code point values, that excludes all code points assigned to non-characters or to surrogates, and most code points assigned to C0 and C1 controls (with the exception of line separators and tabulations treated as white ...

  4. List of file formats - Wikipedia

    en.wikipedia.org/wiki/List_of_file_formats

    This is a list of file formats used by computers, organized by type. Filename extension is usually noted in parentheses if they differ from the file format 's name or abbreviation. Many operating systems do not limit filenames to one extension shorter than 4 characters, as was common with some operating systems that supported the File ...

  5. Comparison of graphics file formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_graphics...

    PSD and PSB: None and RLE: Both 32 bpc Yes Yes Yes — No Yes Yes Yes No? Yes PSP: None Both 16 bpc Yes Yes Yes No — No Yes — — No SVG: None and lossless gzip: Vector [a] 8 bpc No Yes Yes — Yes (1.2 draft) [7] Yes (SMIL/SVG) Yes Yes [8] Yes, XML based — TGA: None, RLE, and other Raster 8 bpc Yes Yes Yes No No No No No — No TIFF

  6. List of Unicode characters - Wikipedia

    en.wikipedia.org/wiki/List_of_Unicode_characters

    A numeric character reference refers to a character by its Universal Character Set/Unicode code point, and a character entity reference refers to a character by a predefined name. A numeric character reference uses the format &#nnnn; or &#xhhhh; where nnnn is the code point in decimal form, and hhhh is the code point in hexadecimal form.

  7. PSD - Wikipedia

    en.wikipedia.org/wiki/PSD

    PSD (rapper), a Californian rapper and hip-hop producer; Port Said Airport, Egypt (IATA code PSD) Private Sector Development, term used in international development; PSD Bank, German banking group; Patricia Street Deli, a famous sandwich and soup restaurant located in the tourist town of Jasper, Alberta, Canada

  8. Position sensitive device - Wikipedia

    en.wikipedia.org/wiki/Position_sensitive_device

    2-D tetra-lateral position sensitive device (PSD) A 2-D tetra-lateral PSD is capable of providing continuous position measurement of the incident light spot in 2-D. It consists of a single square PIN diode with a resistive layer. When there is an incident light on the active area of the sensor, photocurrents are generated and collected from ...

  9. Program-associated data - Wikipedia

    en.wikipedia.org/wiki/Program-associated_data

    Program Associated Data (PAD) or Program Service Data (PSD) is the data displayed on many HD Radio and satellite radio receivers. [1] It can describe the program being transmitted and other information such as the name of the song, the artist and the genre of music.