Moldability is hard to convey in words. You need to experience it. Until you do take the leap, observe examples of how different parts of the system can feel like.
Executing a nested example with Coder.
Looking for the shortcuts that are not defined in a Linux-friendly way.
A method Coder changing shape dynamically when adding/removing the gtExample pragma. The changes affect: the example status label, the in-place example expanding toggle, and the run button. All this without saving.
Performing an extract method refactoring for a keyword method, including the reordering of the parameters. Without requiring any modal dialogue.
Toggling the markup visibility in Documenter.
Renaming a parameter.
Documenting the visualization engines of the Glamorous Toolkit.
The markup appears on cursor move in Documenter.
Transcript used for debugging an animation.
Inspector showing the ballanced rope data structure behind a text editor.
Playground and Inspector used for opening a database connection and evaluating a query.
Playground and Inspector used for opening a database connection and browsing the schema.
Querying for the special literals reveals that they are copied in four places in the kernel of Pharo 7.
Inspector showing an editor object knowing how to inspect both the cursor indexes and the mouse position.
Connector showing the graph of nested examples and previewing the results.
Updating the variable values right in the code during stepping through the Debugger.
Tracking keystrokes with a keyboard simulation in the Inspector.
Exploring the structure of a grammar written in PetitParser2, one of the two parsing engines shipping with Glamorous Toolkit.
Inspector exploring the results of applying Azure Face API to a picture.
Inspecting a missing file shows which part of the file paths exist and which do not.
A custom view easing the inspection of a string and its corresponding characters.
Visualizing the hierarchy of filters and highlighting interesting methods to trace how the search for implementors works.
Inspecting an XML file.
Browsing a grammar definition.