DifferentialD[x] displays as \[DifferentialD]x.
Unicode: F81D. Alias: Esc $D Esc. Letter-like form. Used to represent a formal parameter that will never be assigned a value.
Unicode: 010F. Alias: Esc dv Esc. Letter. Included in ISO Latin-2.
Unicode: F6CF. Alias: Esc god Esc.
Unicode: F6B5. Alias: Esc scd Esc.
AccumulationDistributionLine
Unicode: 010E. Alias: Esc Dv Esc. Letter. Included in ISO Latin-2.
Unicode: F6E9. Alias: Esc dsd Esc.
Unicode: F78D. Alias: Esc goD Esc.
Unicode: F773. Alias: Esc scD Esc.