SALT help needed - what is a morphological marker?

[Hassled]

DS3 has a Statement of SEN Review this pm - he's been diagnosed with a "Phonological Disorder with Articulatory Dyspraxia". Re-reading the many reports there is a sentence saying "X has difficulty with morphological markers". I've googled it and it's all too sciencey and I'm too panicky to understand it - can anyone give me a quick definition?

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Morphology is the way you change the stem of a word by adding new bits thus for example..

Stem=walk

Markers would be=ing/ed/s and so on.

Surprised that such terminology used in a report.I would never use jargon withoutexplanation of what it means and I am a salt.

Thanks Moondog - TBH I have a few other problems with our current SALT but know you lot are thin on the ground. Statement Review went well anyway - keeping the 20 hours a week support he currently has.

20 hours is a preety good whack.