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## Compare two revisions of: Explanations

 ... ... @@ -25,7 +25,7 @@ With \showExplanation{always} the author can define, that an explanations is a 25 25 The optional condition is an expression that can be evaluated to true of false. It can contain 26 26 27 27 * logical operators: AND, OR, NOT 28 -* relation symbols: =, !=, >, >=, <, <= 28 +* relation symbols: =, !=, >, >=, <, <= (make sure to have a white space before and after a relation symbol, e.g. type z != 0 instead of z!=0) 29 29 * variable references 30 30 * answer references: An answer reference can be 'ans', referencing the current answer (on answer level only) or 'ans_index' to reference the answer with the specific index, e.g. 'ans_3'. [Example in WebMiau](https://miau.mumie.net/web-miau/editor/content%2Fexamples%2Fexplanations%2Fprb_differentiated_feedback_1.src.tex) 31 31 * functions: length, count, valid, equal, equalString, equalTrimmedString, equalChoice, edited, condition, equalAnswer 32 32