[Pharo-project] need help with selection/highlight in text

Hi we would like to have display several time the same piece of code (here 'find') into a piece of text (here in method testCycle). In the following method we would like to have all the find occurrences selected. Does anybody have a pointer? Stef and Simon testCycle | a b c | MOGraphFixture cycleGraph: dom. dom run. dom nodes do: [:n| n model = $c ifTrue: [self assert: n isDominant. self deny: n isDominated] ifFalse: [ self deny: n isDominant. n model = $d ifTrue: [self deny: n isDominated] ifFalse: [self assert: n isDominated] ] ]. a := dom findNode: $a. b := dom findNode: $b. c := dom findNode: $c. self assert: (a find = c). self assert: (b find = c).