self field: #value replaceWith: '186.0' asText. self checkConstraints "for node"

text field: #text replaceWith: 'y' asText. self checkConstraints "for variable"

printer node field: #value replaceWith: 4. printer text field: #text replaceWith: printer node value asString asText; field: #frame replaceWith: (printer text frame topLeft extent: 60@20). printer text center. self checkConstraints "for constant"

self field: #value replaceWith: 100. text field: #text replaceWith: value printString asText. self checkConstraints "for expression constant"

text field: #frame replaceWith: (text frame topLeft extent: 60@20). text center. self checkConstraints "for printer"