1. A method comprising: running a source code editor; displaying source code within the source code editor; displaying a summary box, the summary box comprising a list of only one or more aspects affecting the source code displayed within the source code editor; receiving a user input that selects a name of an aspect from the list of one or more aspects to select a selected aspect, the one or more aspects including advice corresponding to the source code displayed within the source code editor, the advice having a name associated therewith that differs from the name of the aspect; and displaying one or more cross-reference markers of the selected aspect in the graphical interface of the source code editor without displaying any cross-reference markers for any of the remaining aspects in the list of one or more aspects.