Verse 16

16.  The Lord first imagines the jiva,  the individual soul,  then,  verily,  the entities of various sorts,  external,  objective,  and internal,  subjective;   as one cognises so one remembers.

" The Lord first imagines the jiva,  the individual soul,"

"fist"  means the beginning of the creation experience.
The One consciousness,  the Lord,  the Absolute,  God,  the singularity of existence is being described by Gaudapada as subjecting itself to a Maya of forgetting.
Through this forgetting the absolute consciousness has the maya of the consciousness of many individual awareness�s,  Jivas.

"then,  verily,  the entities of various sorts"

These Jivas,  suffering the forgetting of Absolute knowledge and consciousness  "imagine"  duality and the reality of entities presented to  "their"  consciousness.

"external,  objective,  and internal,  subjective;"

The individual Jiva or mind, cognising within the awareness limited through Maya see difference between objects seen within the mind and objects seen as external due to their existence being reported by the senses.

"as one cognises so one remembers."

This proof of the reality of objects granted by the experiences of the senses is accepted and learnt, as it were.  This learning is committed to memory and an imagined picture of reality is built up.