Hi, i've just modified the this method for having the GLMSTBrowser render the source pane pretty printed. Tudor, if your interested you could integrate it into glamour. Saludos, Fernando GLMSTBrowserExample>>sourceOn: browser browser showOn: #source; from: #category; from: #class; from: #selector; using: [ browser text title: 'Source'; useExplicitNotNil; forSmalltalk:[:package :class :selector| class ]; when: [ :category :class :selector | class notNil and: [ selector notNil ] ]; display: [ :category :class :selector | class sourceCodeAt: selector ifAbsent: [ String new ] ]. browser text title: 'Source'; useExplicitNotNil; forSmalltalk; when: [ :category :class :selector | class notNil and: [ selector isNil ] ]; display: [ :category :class :selector | class definition ]. browser mondrian title: 'Complexity'; useExplicitNotNil; painting: [ :view :category :class :selector | view nodeShape height: [ :model | model linesOfCode min: 50 max: 5 ]; width: [ :model | model instVarNames size + 5 ]; fillColor: [ :model | model = class ifTrue: [ Color red ] ifFalse: [ Color white ] ]. view nodes: (((Smalltalk organization listAtCategoryNamed: category) collect: [ :each | Smalltalk classNamed: each ]) reject: [ :each | each isTrait ]). view edgesFrom: [ :each | each superclass ]. view treeLayout ]; when: [ :category :class :selector | category notNil ] ]