There is a lot of undocumented versions used in some apps.

notes

• Problem to fix: a div of CanvasPanel and TextareaPanel for flexDirection row, textarea width can not less than canvas, but canvas can have less than textarea, which controlled via value of flex for both elements (22-mar-2026).
• Following works

  divTxaIn.style.flex = "3";
  divBtn.style.flex = "1";
  divOut.style.flex = "5";
    divTxaOut.style.flex = "3";
    divCanOut.style.flex = "2";
  

  but not follwing

  ..
    divTxaOut.style.flex = "2";
    divCanOut.style.flex = "3";
  

• It seems that textarea has minimum width, but not set.