Bot Exploit

I need to change item rare that can save at stash. I dont get a few keyword. For example.

[QUALITY] == "Rare" && [BASETYPE] == "Weapon" && [ONEHAND] == True # [DPS] > 1000 && ([CRITDMG%] > 0 || [LOH] > 700) && [SOCKETS] > 0 -> [KEEP]

[QUALITY] == "Rare" && [TYPE] == "Amulet" # ([CRIT%] == 10 && [CRITDMG%] == 100) || ([CRIT%] == 10 && [AS%] == 9) || (([AS%] == 9 && [CRITDMG%] == 100) && [MAXSTAT] > 0) -> [KEEP]

1 ) What the different [BASETYPE] and [TYPE]
2) This symbol && is refer to ?
3) This symbol || is refer to ?
4) Can explain above 2 item in words so i easy to understand ?

Thx for helping me out.

1) [BASETYPE] is the main category of the item, its values can only be Weapon, Armor, Jewelry, Socketable, CraftingReagent, Utility.
[TYPE] is a more specific category of the item, e.g. Axe, Wand, FistWeapon, Shoulder, Chest, Cloak. (You can refer to the existing rules for more examples)

2) && means "and".
3) || means "or".
4)
[QUALITY] == "Rare" && [BASETYPE] == "Weapon" && [ONEHAND] == True # [DPS] > 1000 && ([CRITDMG%] > 0 || [LOH] > 700) && [SOCKETS] > 0 -> [KEEP]

means the bot will look at the item. If its quality is RARE, and it is weapon, and it is one hand, then the bot will further look at its detail stats.
Its DPS must be above 1000. Either its critical damage % is greater than 0 or its Life on hit is greater than 700. It should have at at least 1 socket. If the item matches all these criteria then the bot will keep the item in stash.

thx for the answer. now i know what to do. appriciate is so much

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eh i notice 1 more, what means by [SCORE].

[SCORE] is a deprecated keyword, meaning it's not used anymore. The lines with the [SCORE] keyword are ignored by the bot now.