The Spanish legal system applies the law mostly strictly. Case law is conservative. If a stipulation in a agreement is not clear to parties there is not a lot of space left for interpretation of a agreement. Hence, clear and explicit drafting of contracts is of mayor importance.
Do you need help with drafting of Spanish contracts?
Contrato de compraventa
Contrato de agencia
Contracto de distribución
Contrato de commission
Contrato de obra o construcción
Better to know upfront, than worry during the execution of a contract.