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Dead + Live for Dry Members (Note d)
Note d to Table 1604.3 says
For wood structural members having a moisture content of less than 16 percent at time of installation and used under dry conditions, the deflection results from L + 0.5D is permitted to be substituted for the deflection results from L+ D”
Thus for dry service conditions, you are now afforded the option of applying only ½ the dead load for the L + D combination only, for deflection analysis.
This applies to all member types, and for beam, column, and concept mode
Component and Cladding Wind Loads (Note f)
Note f to Table 1604.3 says
The wind load is permitted to be taken as 0.7 times the 'component and cladding' loads for the purpose of determining deflection limits herein”
Thus for those wind loads that are component and cladding loads, as opposed to design of members that are part of the main wind force resisting system, you are now afforded the option of applying 0.7 as a load factor to the wind load type in all combinations containing wind loads.
Examples of these types of members are roof joists and wall studs that are directly impacted by wind pressures, however it can apply to all member types. Does not apply to concept mode, which assumes main wind force system wind loads.