Changes

Page is focused on the old [[Mark_II|Mark II]] ConTeXt version, though <tt>\show...< /tt> commands are still the same. Work-in-progress page on current [[Inside ConTeXtLMTX]] | version is [[VisualsDebugging]] >.

There's a whole lot of commands that help you analyzing and debugging your ConTeXt documents. Most of them start with {{cmd|show...}} or {{cmd|trace...}}. While {{cmd|showsomething}} is a command that immediately inserts something, {{cmd|tracesomethingtrue}} or ...<cmdtt>showlayoutfalse</cmdtt> : add four pages is a switch that show margins, layout sizes etcinfluences the behaviour of some other commands. You can check the setting with {{cmd|iftrace...}}. In the following we leave out the boolean value (true or false).

<{{cmd>showframe</cmd> |tracefiles}} : ?

<{{cmd>showgrid</cmd> |tracepositions}} : make line grid visible?

<{{cmd>showsetups</cmd> |traceposstring}} : type a list of all defined sizes (variables) and their values?

<{{cmd>showbodyfont</cmd> |showboxes}} : actual bodyfont family with all variantsshow boxes

<{{cmd>showcharacters</cmd> |showlayout}} : list of available chars of actual bodyfont encodingadd four pages that show margins, layout sizes etc.

<{{cmd>showaccents</cmd> |showsetups}} : shows A-Z and typeset a-z with list of all available accentsdefined sizes (variables) and their values

<{{cmd>showstruts</cmd> |showmakeup}} : make show some otherwise invisible characters visiblemarkup

<{{cmd>showcolor<|showlayoutcomponents}} : To allow Acrobat Reader users (among others?) to make layers visible/cmd> : see [[Colors]]invisible at will, add this command at the start of your file.

<cmdtexcode>showpalet</cmd> : \usemodule [setups]

% \setuphead [..,..==Interaction==..,..]\showrootvalues [head]

% \setuphead [chapter] [..,..=..,..]\showinstancevalues [head] [chapter] \stoptext</texcode> ===Grid, Layers and Column Sets=== {{cmd|tracelayers}} : show boxes of layers {{cmd|tracecolumnset}} : ? {{cmd|tracetextareas}} : ? {{cmd|showgrid}} : make line grid visible {{cmd|tracegridsnapping}} : ? ===[[Tables Overview|Tables]]=== {{cmd|tracetables}} : ? {{cmd|traceTABLE}} : ? {{cmd|tracetabulate}} : ? ==[[Math]]== {{cmd|tracemathtrue}} : show the layout boxes for left, middle, or right-aligned formulas. {{cmd|tracemathcommand}} : ? {{cmd|tracemathcollection}} : ? {{cmd|tracemathsymbol}}''{name of math symbol}'' : show the command (name of symbol) and the symbol itself <texcode>\tracemathcollectiontrue\tracemathsymbol{Re}\tracemathsymbol{Im}</texcode><context>showfields\tracemathcollectiontrue\tracemathsymbol{Re}\tracemathsymbol{Im}</context> {{cmd|tracemathcharacter}} : ? ==[[Bookmarks]] and [[References]]== {{cmd|tracebookmarks}} : ? {{cmd|tracelinenotes}} : ? {{cmd|tracereferences}} : ? {{cmd|tracelabels}} : ?  == Fonts and Type== {{cmd|showbodyfont}} : actual bodyfont family with all variants <context>\setuplayout[scale=.7]\showbodyfont</context> {{cmd|showbodyfontenvironment}} : draws a table that shows which point sizes match the relative sizes <context>\setuplayout[scale=.7]\showbodyfontenvironment</context> {{cmd|showsymbolset}}[''symbolset name''] : shows all the symbols within a given symbol set <texcode>\showsymbolset[navigation 1]</texcode><context>\setuplayout[scale=.7]\showsymbolset[navigation 1]</context> {{cmd|showcharacters}} : list of available chars of actual bodyfont encoding (approx. 4 pages, MkII only) <context>\setuplayout[height=12cm,scale=.7]\setupcolors[state=start]\showcharacters</context> {{cmd|showmathcharacters}} : list of all the available math (non-alphabetical) characters available in math, now including all the AMS characters. MkII only <context>\setuplayout[height=12cm,scale=.7]\setupcolors[state=start]\showmathcharacters</context> {{cmd|showaccents}} : shows A-Z and a-z with all available accents, MkII only <context>\setuplayout[height=18cm,scale=.7]\setupcolors[state=start]\showaccents</context> {{cmd|showstruts}} : display struts (invisible placeholders for proper minimum line heights) ''(Make a better, slightly more complex example.)'' <texcode>\setupframed[framecolor=gray]\showstrutsThis will display \strut struts.\crlfFrame with struts: \framed{xxx}\crlfAnd frame without them: \framed[strut=no]{xxx}</texcode><context>\setuplayout[scale=.7]\setupcolors[state=start]\setupframed[framecolor=gray]\showstrutsThis will display \strut struts.\crlfFrame with struts: \framed{xxx}\crlfAnd frame without them: \framed[strut=no]{xxx}</context>  {{cmd|showfontstrip}} : the current typeface combination, with roman, sans, math, and teletype families visualised, with x-heights <context>\setuplayout[scale=.7]\showfontstrip</context> {{cmd|tracefonthandling}} :  {{cmd|tracechinese}} : ? {{cmd|tracedfontname}}''{Font Name}'' : Chain of synonyms for the given font name <texcode>\tracedfontname{Bold}</texcode> <context>\setuplayout[scale=.7]\tracedfontname{Bold}</context>  {{cmd|tracedfontencoding}} : ? == Colors and Graphics == ===Colors=== {{cmd|showcolor}} : see [[Color]] {{cmd|showcolorgroup}} : ? {{cmd|showpalet}} : ? {{cmd|tracedgreymode}} : ? {{cmd|tracedgreycolormode}} : ? {{cmd|tracedrgbcolormode}} : ? {{cmd|tracedcmykcolormode}} : ? {{cmd|tracedspotcolormode}} : ? ===Figures=== {{cmd|showexternalfigures}} : ? {{cmd|traceexternalfigures}} : ? {{cmd|tracesidefloats}} : ?  ===Interaction=== {{cmd|showfields}} : ? {{cmd|tracefields}} : ? {{cmd|traceJScode}} : trace JavaScript code  {{todo|A lot of commands and switches are still unexplained.}} [[Category:Basics]][[Category:Tools]][[Category:Layout]][[Category:Old Content]]