Can someone explain how to read the Conversion Rules section in the second chapter? I haven't seen this style of notation before. For example: Implicit typ

Can someone explain how to read the Conversion Rules section in the second chapter? I haven't seen this style of notation before. For example: Implicit type conversion rules, applied in order, before any operation: ⊗: any operation (*, +, /, -, %, etc.) (A) Floating point promotion floating type ⊗ integer type → floating type (B) Implicit integer promotion small integral type := any signed/unsigned integral type smaller than int small integral type ⊗ small integral type → int (C) Size promotion small type ⊗ large type → large type (D) Sign promotion signed type ⊗ unsigned type → unsigned type Edit: oops, I missed the explainer. The ⊗ stands in for any operator in case that was confusing to anyone else who missed it. :-)