The buy entry modulation percentage allows for a systematic manual adjustment of the highest buy order for this market.
The price at which the highest buy order normally is placed will be changed by this percentage. This can be upward towards the market price or downwards.
This is useful if you believe that the bot systematically places the highest buy orders too close to the market price or too far away.
Also if you are bullish on the market.
Example: If the bot would place the highest buy order at 0.01 BTC and the buy modulation is set to -5, then the bot will place the highest buy not above 0.0095 BTC.
Note: If a maximum buy price is configured, then that may override this setting. Also, the bot will never place a buy higher than the last known market price.