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# Index: B

backslash (\)
  @ prefix, escaping with: 13.5.4. Image Processing
  escaping characters with: 10.1.4. Delimiters
  escaping double quotes in HTML: 5.4.1. Lots of print Statements
backup files (source code), security risks with: 1.4.1.2. Configuring by extension
bar charts
  creating with GD::Graph::bars module: 13.4.2. GD::Graph
  three-dimensional: 13.4.3. GD::Graph3D
bareword subroutines, strict vs.: 15.2.1. Use strict
Base64 format digests: 8.3.1. MD5
Bcc field (blind carbon-copy): 9.3. Structure of Internet Email
  9.4.2. Mail Queue
BEGIN blocks
  mod_perl, treatment of: 17.3.2. mod_perl Considerations
  taint mode and: 13.3.2. Using GD
benchmarking code, Perl CGI scripts: 17.1.1. Benchmark Your Code
  Benchmark module, testing script speed in taint mode: 8.4.4. Why Use Taint Mode?
Berkeley DB files: 10.2. DBM Files
  hash file (servers), counting visitors to HTML pages: 6.2.6. Executing CGI Programs
binary data
  binmode function: 13.5.4. Image Processing
    avoiding bugs with use of: 15.2.7. Use binmode
    enabling binary mode with: 5.2.4. File Uploads with CGI.pm
    operating systems not using newlines: 3.4.1. Check the Client Browser
    using for output: 13.2.1.1. binmode
  digests: 8.3.1. MD5
  files, filtering out with grep function: 12.2. Searching One by One, Take Two
body
  HTTP requests/responses: 2.2.1. The Request and Response Cycle
  HTTP responses
    length of: 2.4.2.2. Content-Length
    separating from header: 3.3.1.1. Outputting documents
  Internet email messages: 9.3. Structure of Internet Email
boilerplates: 6.2.5. Including Boilerplates
bookmarklets, JavaScript: 7.4. Bookmarklets
  CGI scripts, using with: 7.4.2. Bookmarklets and CGI
    comments.cgi script, bookmarklet: 7.4.2. Bookmarklets and CGI
  creating (example): 7.4.1. Bookmarklet Basics
  Netscape Communicator, working with: 7.4.1. Bookmarklet Basics
  web page for: 7.4.2. Bookmarklets and CGI
booleans, perl treatment of: 1.3.1. Why Perl?
brackets ([]): 6.4.2.1. Embperl code blocks
  blocks of code, enclosing in Embperl: 6.4.2.1. Embperl code blocks
  placement in code: 16.2. Coding Guidelines
browsers (see web browsers)
browsing songs available for download (interactive form): 7.3.2. Example
buffering
  CGI output, nph scripts and: 3.3.2. Complete (Non-Parsed) Headers
  flushing buffers automatically: 14.1.2. IO::Socket
  output stream, unbuffering: 15.2.6. Unbuffer Output Stream
  output to STDOUT, malformed header errors and: 15.1.4. "Malformed" Header
BUFFER_SIZE: 5.2.4. File Uploads with CGI.pm
business rules, collecting into modules: 6.4. Embperl
buttons: 4.2.3.9. Plain buttons
  (see also individual button types)
  image buttons: 4.2.3.8. Image buttons
  plain buttons: 4.2.3.9. Plain buttons
  radio buttons: 4.2.3.5. Radio buttons
  reset buttons: 4.2.3.7. Reset buttons
  submit buttons: 4.2.3.6. Submit buttons

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