renamed structure PrintMode to Print_Mode, keeping the old name as legacy alias for some time;
import
import_segment "hol4"
type_maps
"sum" > "+"
const_maps
"sum_case" > "Datatype.sum.sum_case"
"OUTR" > "HOL4Compat.OUTR"
"OUTL" > "HOL4Compat.OUTL"
"ISR" > "HOL4Compat.ISR"
"ISL" > "HOL4Compat.ISL"
"INR" > "Sum_Type.Inr"
"INL" > "Sum_Type.Inl"
thm_maps
"sum_distinct1" > "Datatype.sum.simps_2"
"sum_distinct" > "Datatype.sum.simps_1"
"sum_case_def" > "HOL4Compat.sum_case_def"
"sum_case_cong" > "HOL4Base.sum.sum_case_cong"
"sum_INDUCT" > "HOL4Compat.OUTR.induct"
"sum_CASES" > "Datatype.sum.nchotomy"
"OUTR" > "HOL4Compat.OUTR"
"OUTL" > "HOL4Compat.OUTL"
"ISR" > "HOL4Compat.ISR"
"ISL_OR_ISR" > "HOL4Base.sum.ISL_OR_ISR"
"ISL" > "HOL4Compat.ISL"
"INR_neq_INL" > "Datatype.sum.simps_2"
"INR_INL_11" > "HOL4Compat.INR_INL_11"
"INR" > "HOL4Base.sum.INR"
"INL" > "HOL4Base.sum.INL"
ignore_thms
"sum_axiom"
"sum_TY_DEF"
"sum_ISO_DEF"
"sum_Axiom"
"IS_SUM_REP"
"INR_DEF"
"INL_DEF"
end