Sorry, I’ll explain with an example:

Let’s say I want to invest in the FTSE 100 index which currently stands at 6000:

When I log into my demo IG spread betting account, I can use either their own platform to execute my trades or use PRT.

If I use the IG platform, I manually place a spread bet of £10 per point (point size = 1) and enter at 6000. My trade has a notional value of £60,000 and with a 5% margin, my exposure is £3000. The FTSE rises to 6005 and I exit my position with £50 profit.

If I use PRT, I execute the code “BUY 10 PERPOINT AT MARKET” hoping for the same criteria as above but the system purchases 10 x 6000. My trade has a real value of £60,000 with £60,000 exposure.

I have tried with LOTS, SHARES, and CONTRACTS but the result is the same.