The Here Grant an Dixon explainin in 1920 hoo
(a) they conseedert Scots as a ‘language’ an
(b) the wey fowk o the time relatit the then weel-kent standart written form (the ane fowk nooadays threip disna exist) an the spoken dialeck varieties.
Manual of modern ScotsManual of modern Scots by Grant, William, 1921,University Press edition,
via Openlibrary