Interface Position

A reference to a location in the document, relative to a specific element. The user's cursor is represented as a Position, among other uses. Scripts can only access the cursor of the user who is running the script, and only if the script is bound to the document.

// Insert some text at the cursor position and make it bold.
var cursor = DocumentApp.getActiveDocument().getCursor();
if (cursor) {
  // Attempt to insert text at the cursor position. If the insertion returns null, the cursor's
  // containing element doesn't allow insertions, so show the user an error message.
  var element = cursor.insertText('ಠ‿ಠ');
  if (element) {
    element.setBold(true);
  } else {
    DocumentApp.getUi().alert('Cannot insert text here.');
  }
} else {
  DocumentApp.getUi().alert('Cannot find a cursor.');
}