TYPO3 Core

In TYPO3 CMS 6.2, the name of the button is acronym, not abbr. This will be changed in TYPO3 CMS 7.0.

Therefore, in the list RTE.default.showButtons, replace abbr with acronym.

I changed showbuttons to *, still no abbr button (see the screenshot)

Here is my config :

// Default RTE configuration (all tables)
RTE.default {
// Available classes for HTML elements
buttons.blockstyle.tags.div.allowedClasses >
buttons.textstyle.tags.span.allowedClasses >
buttons.blockstyle.tags.table.allowedClasses >
buttons.blockstyle.tags.td.allowedClasses >
buttons.link.properties.class.allowedClasses >
buttons.textstyle.tags.span.allowedClasses >
classesAnchor >
buttons.image.properties.class.allowedClasses >
classesAnchor = external-link,external-link-new-window,internal-link,internal-link-new-window,download,mail

1. Liste des styles de paragraphes et de textes ####
   buttons.textstyle.tags.span.allowedClasses =
   allowedClasses =
   classesAnchor.default {
   page =
   url =
   file =
   mail =
   }

// Show tags from content CSS 
  showTagFreeClasses = 1

// Disable examples styles 
  disablePCexamples = 1

// Tab elements to remove in the picture popup 
  buttons.image.options.removeItems = magic, dragdrop
  buttons.image.options.magic.maxWidth = 1000
  buttons.image.options.magic.maxHeight = 1000
  buttons.image.options.plain.maxWidth = 1000
  buttons.image.options.plain.maxHeight= 1000

// Default target for links 
  buttons.link.properties.target.default >

// Tab elements to remove in the link popup 
  buttons.link.options.removeItems >

// Buttons to show 
  #showButtons = formatblock, space, bar, space, abbr,acronym, blockstylelabel, blockstyle, space, textstylelabel, textstyle, space, bar, space, textindicator, linebreak, bold, italic,  subscript, superscript, space, bar, space, insertparagraphbefore, insertparagraphafter, space, bar, space, orderedlist, unorderedlist, space, bar, space, outdent, indent, linebreak, link, insertcharacter, space, bar, space, findreplace, removeformat, spellcheck, space, bar, space, copy, cut, paste, pastetoggle, space, bar, space, undo, redo, space, bar, space, chMode, showhelp, about, linebreak, language, showlanguagemarks, linebreak, space,bar, space, user
  showButtons = *
  // Buttons to hide 
  hideButtons = emoticon

// Toolbar order 
  #toolbarOrder < .showButtons

// Group buttons (Mozilla only) 
  keepButtonGroupTogether = 1

// Hide table operations 
  hideTableOperationsInToolbar = 0

// Show toggle borders item even if table operations are disabled 
  keepToggleBordersInToolbar = 0

// Disable contextual menu 
  contextMenu.disable = 0 
  contextMenu.disable = 0

// Disable color picker 
  disableColorPicker = 0

// Disable color selector 
  disableSelectColor = 0

// MS Word cleaning 
  enableWordClean = 1

// Remove HTML comments 
  removeComments = 1

// Remove HTML tags 
  removeTags = font

// Remove HTML tags and their content 
  removeTagsAndContents =

// Use CSS formatting when possible 
  useCSS = 0

// Disable enter key for new paragraphs creation 
  disableEnterParagraphs = 0

// Remove trailing BR if any 
  removeTrailingBR = 1

// Hide tags in the quick tag plugin 
  hideTags = font, font (full)

// Disable table attributes for table operations 
  disableAlignmentFieldsetInTableOperations = 0 
  disableSpacingFieldsetInTableOperations = 0 
  disableColorFieldsetInTableOperations = 0 
  disableLayoutFieldsetInTableOperations = 0 
  disableBordersFieldsetInTableOperations = 0

// Colors available 
  colors = color1,color2,color3,color4,color5,color6 
}

// Processing rules
RTE.default.proc {

1. keepPDIVattribs = xml:lang,id,class,style,align //style, align a ajouter ?

// Transformation method 
  overruleMode = ts_css

// Do not convert BR into linebreaks 
  dontConvBRtoParagraph = 1

// Map paragraph tag 
  remapParagraphTag = p

// Tags allowed 
  allowTags = a, abbr, acronym, address,blockquote, b, br, caption, center, cite, code, div, em, font, h1, h2, h3, h4, h5, h6, hr, i, img, li, link, ol, p, pre, q, sdfield, span, strike, strong, sub, sup, table, thead, tbody, tfoot, td, th, tr, tt, u, ul, dl, dt, dd, ins

// Tags denied 
  denyTags >

// Add hreflang attributes
  tags.a.allowedAttribs = hreflang,title,href

// Attributes to keep for P & DIV 
  keepPDIVattribs = xml:lang,class,style,align

// Permet de garder les span sur la page notamment
  allowedClasses < RTE.default.allowedClasses

// Tags allowed outside <p> and <div> tags 
  allowTagsOutside = img,hr,table,tr,th,td,h1,h2,h3,h4,h5,h6,br,ul,ol,li,pre,address,dl,a,br

// Tags allowed in Typolists 
  allowTagsInTypolists = br,font,b,i,u,a,img,span

// Keep unknown tags 
  dontRemoveUnknownTags_db = 1

// Allow tables 
  preserveTables = 1

// Entry HTML parser 
  entryHTMLparser_db = 1 
  entryHTMLparser_db { 

// Tags allowed 
    allowTags < RTE.default.proc.allowTags

// HTML special characters 
    htmlSpecialChars = 0

// Allow IMG tags 
    tags.img >

// Allow attributes 
    #tags.span.fixAttrib.style.unset > 
    #tags.p.fixAttrib.align.unset > 
    #tags.div.fixAttrib.align.unset >

// Additionnal attributes for P & DIV 
    div.allowedAttribs = class,id,style,align
    p.allowedAttribs = class,id,style,align
    br.allowedAttribs = class,id

// Tags to remove 
    removeTags = center, font, strike, u

// Keep non matched tags 
    keepNonMatchedTags = protect

}

// HTML parser
  HTMLparser_db { 

// XHTML compliance 
    xhtml_cleaning = 1

}

// Exit HTML parser 
  exitHTMLparser_db = 1 
  exitHTMLparser_db { 

// Remap bold and italic 
    tags.b.remap = strong 
    tags.i.remap = em

// Keep non matched tags 
    keepNonMatchedTags = 1

// HTML special character 
    htmlSpecialChars = 0

} 
}

1. Use same RTE processing rules in FE
   RTE.default.FE.proc.overruleMode = ts_css

I have an abbreviation record, and i have installed static_info_tables, in my 4.5 TYPO3 websites i have the abbr button. Not in the 6.2 TYPO3 websites!