Disabled is used as a buy or sell strategy in place of another named strategy when coin specific strategies are used.
DEFAULT_A_buy_strategy = LOWBB
DEFAULT_B_buy_strategy = RSI
This has the effect of letting you use your default settings except for a specific coin, denoted by the XXX.
The result is that all coins will use the LOWBB and RSI strategies in the example, the coin that is set in place of XXX will use ONLY LOWBB, because the 'B' buy strategy has been disabled.
XXX_B_buy_strategy = DISABLED
DEFAULT_DCA_A_buy_strategy = LOWBB
DEFAULT_DCA_B_buy_strategy = RSI
This has the effect of letting you use your default settings except for a specific coin, denoted by the XXX.
The result is that all coins will use the LOWBB and RSI strategies in the example, the coin that is set in place of XXX will use ONLY LOWBB, because the 'B' buy strategy has been disabled.
XXX_DCA_B_buy_strategy = DISABLED