Points of cultural continuity:
1. Puja
In daily Jain puja, ritually some of these symbols are drawn by the Jain householders intentionally, and ritually, while they know their defined, highly ethical meanings very well
Siddhas or pure souls residing on Siddha Shila, but ratnatraya is the prerequisite.
Four anuyogas (the scriptures of Jainism).
or 
The swastika or the cross denoting four mundane quarters where the soul can wander, with its central point from which one takes salvation, making five, or pancham gati.
Next issue: 2. Swastika